Applied Ballistics Tactical – Online Guide

The Applied Ballistics Tactical (AB Tactical) software is a full-featured ballistics solver made to run on Android devices.  It has been specifically optimized for both speed and accuracy.  Nearly every function and parameter is available within 1-2 clicks and all parameters are immediately visible from the main viewing screen.  The application continually shows the most recent windage and elevation holds from all user screens and the solution updates instantly as parameters are changed.  In addition, from the main screen there is simple and fast access to modification of the wind speed and 1-click access to a full range card.  This App is also the only mobile application that can upload a user profile to a compatible Applied Ballistics device. (Kestrel 4500 Applied Ballistics, RAPTAR-S, REM 100/200).

PDF User Manual Can Be Found Here: AB Tactical PDF Maual

 

Features

The following table lists the features of the Applied Ballistics Tactical app and gives a brief explanation of what they are/do.  Greater detail along with directions for how to properly use all the features is given below in the instructional sections of this page.

  1. Highly Accurate Ballistics EngineThe Applied Ballistics Tactical App runs a Point Mass ballistic solver.  The program integrates the equations of ballistic motion numerically, using a 4th order Runge-Kutta routine at 1000 Hz.  This is a standard way of solving dynamic equations of motion in aircraft and missile simulations.  This particular solver was written by former missile design engineer and current ballistician Bryan Litz.
  2. WEZ – Weapon Employment Zone capabilities. Read Accuracy and Precision for Long Range Shooting for complete details on how to utilize this.
  3. WPAWind Profile Analysis capabilities. You can input up to 10 wind zones, and connect to an Applied Ballistics WSA (Wind Sensor Array) which is capable of reporting wind down range, and gps syncing its location.
  4. Multiple Drag Models and stepped BC’sReference you’re projectiles Ballistic Coefficient (BC) to either the old G1 standard, or the more representative G7 standard (read this article to learn about G1 and G7 BC’s).  You can use average BC’s, or enter BC’s by velocity band. 
  5. Custom Drag Curves – Applied Ballistics Tactical comes with the entire Custom Drag Model Library pre-installed. Custom Drag Models are not G1/G7 BCs. To learn more see here: CDM’s
  6. Firearm/Ammo ProfilesBuild and store custom profiles that characterize your specific rifles, sights, and ammo for easy recall.
  7. Target Range EstimationUse the built-in distance calculator to estimate target range using your scope’s reticle (supports MOA, IPHY and Mils).
  8. Angle Detection – Use your device’s accelerometer to determine look angle (up/downhill shot). Simply turn on the angle detector and point device at target.
  9. Weather Station AtmosphereAutomatically populate Altitude, Temperature, Pressure, Humidity and Wind Speed by pulling data from the nearest weather station based off GPS location (Density Altitude may also be used instead of altitude/pressure/humidity input).
  10. Atmosphere via Kestrel DeviceIf you have a Bluetooth-enabled Kestrel 5000 or 4000 series or Kestrel Drop device, you can load the atmosphere straight from your Kestrel into the program.
  11. LRF Bluetooth InputCan Bluetooth to a Sig Kilo 2400 ABS for range input. With the Applied Ballistics Bluetooth Dongle you can remotely connect a PLRF 15/25, Vector 21, STORM, or RULR to AB Tac.
  12. Spin DriftThis software automatically calculates Spin Drift, and implements it in to the firing solution.
  13. Coriolis EffectThis software automatically calculates Coriolis Effect, and implements it in to the firing solution.
  14. Aerodynamic JumpAB was the first commercially available ballistic solver to correctly calculate for Aerodynamic Jump. Aerodynamic Jump is independently solved and provided as part of the firing solution.
  15. Interactive HUD Output ViewElevation, windage and lead solutions are presented in large and easy to see font for your desired correction unit (MOA, IPHY or Mils). You can easily tap-in changes to distance, wind, wind direction, lead and lead direction or invoke the distance calculator, angle detector or azimuth detector and the solutions will be auto-recomputed upon any changes to input. 
  16. Ballistic CalibrationSometimes it’s not possible to accurately determine all the variables required to calculate an exact ballistic solution. As a result, the Point Of Impact (POI) predicted by the program can be a little different from where the actual bullet hits in the real world. One of the more powerful features of the Applied Ballistics Mobile App is the 3 modes of Ballistic Calibration. A user can calibrate the program based on real world observed drop data at range by inputting pairs of observed range/drop data, and the program will calibrate itself to your data point by modifying either: muzzle velocity, drag, or simply by scaling the computed drop. As one of the most powerful features only available in the advanced version of the application, the proper use of Ballistic Calibration requires a user to learn the details of how to use it correctly. Full instructions on all 3 modes are given below in the instructions. Open Ballistic Calibration Article
  17. Dark ThemeThis App implements a dark theme which is night vision friendly, and helps to reduce battery usage.
  18. Metric Support – Data inputs/output can be configured to use Metric units.

 

Operational Overview

Specifically optimized for both speed and accuracy.  Nearly every function and parameter is available within 1-2 clicks and all parameters are immediately visible from the main viewing screen.  The application continually shows the most recent windage and elevation holds from all user screens and the solution updates instantly as parameters are changed.  In addition, from the main screen there is simple and fast access to modification of the wind speed and 1-click access to a full range card.  This App is also the only mobile application that can upload a user profile to a compatible Applied Ballistics device. (Kestrel 4500 Applied Ballistics, Kestrel Sportsman, RAPTAR-S, REM 200).

Main Screen

The main screen of the application provides a quick view of all of the current bullet, gun, target, and environmental conditions.  At the top of the main screen and all edit screens is a view of the elevation &windage holds for the current settings and the WEZ Probability. Also in the HUD is the Time of Flight, Remaining energy, Target Lead, and current output Units.

 

Navigation –  To move into any of the edit screens for the Bullet, Gun and Scope, Target, or Environment, press the ⋮ button located on the right of each of the sections. 

Editing a Profile –  AB Tactical application uses the concept of profiles to manage a bullet and gun combination.  The currently selected profile is displayed on the main screen.  When the application is launched for the first time, the name Default Weapon will appear in the profile section.  It is recommended that you immediately rename this profile to your gun name.  It is important to know that any parameters that are edited for the bullet and the gun/scope will be directly modified for the currently selected profile.  Parameters of other profiles will not be modified.  All changes made to the bullet and gun settings are immediately saved to the profile database.  There is no need to additionally save the profile.

Creating a New Profile –  To create a new profile, use the Android Action bar and select New Profile from the menu.  The current active profile will be saved to the database and a new profile will be created with the default bullet and default gun settings.  The name on the main screen will be reset to New Profile.  Any modifications that are made to the new profile will be saved.  It is required that you edit the name from Default Weapon to your new profile name in order to be saved to the database.

Deleting a Profile –  To delete the active profile, select the Delete Profile option from the Action Bar.  The currently selected profile will be deleted and the next profile in the database will become active.  If no other profiles exist, a new profile will be created with the default settings.

Selecting a Profile To switch the active profile, Select Profile from the Action Bar.   A list of your previously saved profiles will be shown.  To select the desired profile, click on the ⋮ next to the name of the desired profile.  The profile will be loaded from the database and the active bullet and gun settings will be updated to match the selected profile settings.

Input Section

This section covers the various inputs required to build; rifle profiles, ammo profiles, and describe the target and environment to the ballistic solver.  It’s important to note that the more accurate the inputs are, the more accurate the output will be.  If you rush thru the inputs and only use approximate numbers, the output will be correspondingly approximate.  However if truly accurate inputs are gathered and input, this program is capable of highly accurate predictive fire solutions.

Many functions and controls are universal in the application. These help you to navigate, change units, and edit values inside the application.

Getting back to the Main Screen –  To access the Main Screen, hit the Android back button from any of the sub menus. This will return you to the main screen.

Editing a Value –  To edit a value, click on the appropriate text entry box on the right hand side.  By pressing a single time, all of the number is highlighted and you may begin immediately typing the correct number. If the value does not highlight, or if the value is greyed out, then you will not be able to edit that value.

Changing Input Units –  For each of the input units that have a blue button, the input units are adjusted by clicking on the button.  The units displayed below the button are changed and the value in the corresponding edit box is automatically converted.

 

Bullet Screen

The bullet properties edit screen is accessible from the main screen by clicking on the ⋮ icon on the right of the bullet section. This edit screen allows the user to edit parameters about the bullet itself, including ballistic coefficient, drag curve, bullet weight, bullet diameter, and bullet length. In addition, AB’s extensive bullet library can be accessed from here by clicking on the Bullet Selection button.

BulletThis section shows you the name, caliber, and weight of the currently selected bullet from the database.

  1. Drag ModelMost long range bullets are better matches to the G7 standard, and using G7 BC’s (Ballistic Coefficient) will provide sufficiently accurate trajectory predictions out to a range where the bullet slows to transonic speeds (~1340 fps).  Be sure that if you select the G7 drag model that you enter a G7 BC (not a G1 BC).
    When using custom drag curves, the ballistics engine is solving the equations of motion using the exact drag curve for a specific bullet, not referencing a standard (G1 or G7) curve.  The added accuracy in trajectory predictions that is possible with custom drag curves is especially valuable when shooting at targets at or beyond transonic range, because that’s the speed region where drag curves tend to diverge most.  Once a bullet has been selected from the database, selection of the drag model is performed by clicking on the pull down menu.  For bullets that Applied Ballistics has measured, the G1, G7, and Custom curve is available.  For user created bullets, only the G1 and G7 will be able to be selected.
  2. Using the Bullet Database The bullet database includes parameters for over 425 bullets, including bullet weights, diameters, lengths, G1 & G7 ballistic coefficients, as well as AB-measured custom drag curves. These custom drag curves provide a highly accurate drag model through transonic flight, and are recommended for use instead of G1 & G7 to maximize accuracy.
  3. Selecting a Bullet To select a bullet, click on the Database button from Bullet Screen.  First, a list of calibers will be presented, then a list of manufacturers, and finally the list of bullets.  This is shown below.  Selecting a bullet will overwrite the current settings in the Bullet Screen.  For bullets selected from the database, they will be accessed in a read-only mode and the parameters will not be able to be modified by the user.  For user created bullets, all options will be available for modification and any modifications that are made to the currently selected bullet will be immediately saved into the database as the parameters are modified.
  4. Bullet Diameter – [Inches or Centimeters] This is the bullet caliber.  For example, .284, .308, .338, etc. 
  5. Bullet Weight – [Grains] Self-explanatory. 
  6. Bullet Length – [Inches or Centimeters] This is used for stability and related trajectory calculations including spin drift.

 

Gun and Scope Screen

The Gun and Scope properties edit screen is accessible from the main screen by clicking on the ⋮ icon on the right of the appropriate section.  This edit screen allows the user to edit parameters about the gun and scope, including the muzzle velocity, the zero range, the sight height and the twist of the barrel. When any of the settings are modified on this screen, the Fire Control Solution Panel at the top of the screen is immediately recalculated and displayed.  These modifications are performed on the currently selected profile only. Tip: When using a suppressed weapon, you can adjust for the shift in zero that occurs when removing or adding a suppressor by using the Zero Height/Offset feature. Create two weapon profiles, one for suppressed and one for not. Then input the shift in zero when the suppressor is removed in to the Zero Height/Offset variables.

  1. Muzzle Velocity – [feet per second (fps) or meters per second (mps)] How fast the bullet leaves the rifle as measured by a chronograph.  For very accurate results, remember to account for the velocity lost in the 10-15 feet between the muzzle and the chronograph.  As a rule of thumb, a bullet looses 5-15 fps in this short distance. Muzzle Velocity can also be measured using the Ballistic Calibration Tool.
  2. Zero range[Yards or Meters] This is the range at which your rifles Point Of Aim (POI) equals the Point Of Impact (POI).  A Zero range of 100 yards or meters is encouraged for several reasons, including insensitivity to atmospheric conditions, and accounting for inclined fire effects.
  3. Sight Height Sight Height is from the Center of the Bore to the Center of the Scope, best measured if possible at the turrets. An easy way to do this is with this formula. (Barrel width ÷ 2) + (Scope Width at Turrets ÷ 2) + distance between scope and barrel = Sight Height. Note, do not measure the turret itself, only the scope tube.
    If you have a tapered scope mount (example 20 or 30 moa scope base), you do not need to worry about inputting this. Measuring the scope from the center of the turret location eliminates any error this may cause. If you choose to measure the scope at the bell the error will be around 1 click at 1000 yards when using a tapered mount, no error will exist when using a standard scope mount. For all practical purposes even with a tapered scope base you can measure from the bell of the scope and still be on target.
  4. Twist Rate How many “inches per turn” is your rate of rifling twist.  This number is used along with other inputs to determine the stability and related trajectory metrics.  Typical value for this input is between 1:7″ and 1:13″.
  5. Twist Direction – [Left or Right] Right refers to a clockwise direction of rotation from the shooters point of view.  Most barrels are right twist.
  6. Zero Height – [Inches or Centimeters] If your POA does not exactly equal your POI at the zero range, you can enter how much the group is off center.  In other words if you have 1/4 MOA clicks on a scope and the zero is 0.1″ high, you can enter this here to account for the error that’s less than 1 click.
  7. Zero Offset – [Inches or Centimeters] Same as above for the horizontal direction; use a negative value to indicate left.

 

Target Screen

The Target Screen properties edit screen is accessible from the main screen by clicking on the ⋮ icon on the right of the appropriate section.  This edit screen allows the target including information such as the range, heading to target (0 degrees is North, 90 degrees is East), inclination angle to target, latitude, and target speed.  A positive target speed indicates left to right and a negative target speed indicates a right to left target movement.

  1. Range – [yards or meters] Distance to the target.
  2. Target Range Estimation – You can estimate the range to the target using the scopes reticle by clicking on the  Icon and it will bring up a dialog box. You can change the units via drop down menu by clicking on the units you wish to change.
  3. Azimuth – Direction of fire in degrees, clockwise from north.  For example, firing due east is 90 degrees, south is 180 degrees, west is 270 degrees, and north is 0 or 360 degrees.  You can access the get target azimuth function via the mobile devices built in compass via the menu.
  4. Azimuth via Device – You can use the devices sensors to measure azimuth by clicking on . In order to accurately measure azimuth using the phones sensors its bets to place the phone on a cold barrel (Cold barrels only or you will damage your device) then acquire while aiming at the target with the weapon. Note: Placing your device on a hot weapon will damage it.
  5. Inclination – This is the uphill or downhill angle to your target and is measured with an inclinometer (angle indicator).   The value will be positive for look-up angles, and negative for look-down angles.  Small look angles, like less than 5 degrees can typically be ignored with little consequence even for long range shooting.  If the angle exceeds 10 degrees it becomes increasingly important to account for.
  6. Inclination via Device – Many mobile devices have inclinometers built in, and you can use it to populate the Inclination angle field by clicking on the  Icon. In order to accurately measure inclination using the phones sensors its bets to place the phone on a cold barrel (Cold barrels only or you will damage your device) then acquire while aiming at the target with the weapon. Note: Placing your device on a hot weapon will damage it.
  7. Latitude – How far you are from the equator (south of the equator is noted with -).  Tip, most of the lower 48 states of the US lay between 30 and 45 degrees North Latitude. This can be automatically populated by using the devices GPS. Simply click on the  Icon.
  8. Target Speed – You can enter a speed for a moving target and the Range Card or HUD will populate a moving target hold over. 

 

Environment Screen

The Environment Screen properties edit screen is accessible from the main screen by clicking on the ⋮ icon on the right of the appropriate section.  This section allows the user to enter values for the wind speed, the direction it is coming from, temperature, pressure and humidity. Atmospheric inputs have historically been the least understood and causes the most trouble for shooters running ballistics programs, in particular the pressure inputs.  The following discussion elaborates on the correct way to manage these variables.  There are two options for describing pressure to a ballistics program; 1) Enter the barometric (aka corrected) pressure and altitude, or 2) Enter the Station pressure where you are.  Some definitions are in order regarding barometric and station pressure. 

Barometric pressure is also known as sea level corrected pressure, and is what the weather station and airports report because it’s useful for pilots and making weather assessments.  Barometric pressure is not the actual air pressure where you are, rather it’s a number that’s corrected to sea level.  In order to determine the actual air pressure where you are (which is what the ballistics program cares about), you have to account for the effects of altitude.  However if you have a handheld weather meter like a Kestrel, you can measure Station Pressure directly which is the actual air pressure where you are.  This is the preferred method of inputting pressure data because it’s one less input and relies on only one measurement instead of two.

A common error is to mistake station pressure for barometric or vice versa.  The consequence of this error is that the wrong air density gets applied which degrades the accuracy of trajectory predictions.  This error is increasingly more severe the higher up you are above sea level.

The proper setup for the Kestrel 4000 series is shown in the user manual. Ref Alt at 0, Sync Alt Off. Does not apply to K5 series devices.

NOTE: In the AB Tactical software, station pressure must be used – this is what is reported by the Kestrel device and most handheld weather meters or watches.

When using a Kestrel 4000 Series Weather Meter or Kestrel Drop please refer to their individual instructions.

  1. Wind 1 – [mph or m/s] Enter a wind speed.
  2. Wind 2 – Wind 2 can be used in two different ways. It can be used to bracket your wind call, or as a live feed from your Kestrel Device. As an example, if the wind is between 5 and 10 mph, you would set Wind 1 to 5 mph and Wind 2 to 10 mph.   If the wind is currently 7-8 mph, the user can then mentally interpolate the correct value for the wind hold.  Note that the aerodynamic jump value for elevation is computed off of Wind 1 and when a Kestrel device is connected it only modifies Wind 2. Wind 2 is the Live Feed from your Kestrel Device. If you have a Kestrel Wind Meter connected this will update in real time, until that connection is disabled.
  3. Wind Direction – [Degrees or Clock] In the case of wind direction, the number represents the direction from which the wind is coming; so a 12 o clock wind is coming directly at the shooter from the target direction, a 9 o clock wind is blowing from left to right across the range.
  4. Temp –  [Fahrenheit or Celcius] Enter the current air temperature here. 
  5. Pressure – Station Pressure AB Tactical only accepts station pressure. Do not input Barometric pressure.To further clarify the output from the Kestrel, here is an excerpt from the Kestrel user’s manual:“Some final notes – If you wish to know the actual or station pressure for your location (such as for engine tuning), simply set the reference altitude on the BARO screen to “0”. In this case, the Kestrel Meter will not make any adjustment and will display the measured value. (Engine tuning and ballistics software sometimes refer to atmospheric or station pressure as “absolute pressure.” These applications are concerned with the actual air density, as opposed to pressure gradients relating to weather, so barometric pressure is less useful.”
  6. Humidity – Insert Humidity Here. (Humidity only effects the DA range by .06% leaving it at 50% will have negligible effects).

 

Weapon Employment Zone (WEZ)

To enable and utilize the WEZ tool[1], simply click on the Weapon Employment Zone tab to access. This tool allows a user to investigate how the bullet’s point of impact is affected by changes or uncertainties in the input parameters, as it can reveal how accurately the parameters need to be measured.  The WEZ screen allows the user to enter the precision of various inputs, as well as range to target, the precision of the rifle system used, the shape of the target, and the dimensions of the target. On the top, the results of the computation are displayed when you have the WEZ selected from the Setting menu.

System Variables
The WEZ tool provides the user with the insight to see how each of the variables in the table below affects the accuracy of a ballistic computation and determine probability of hit for every shot. The tool comes prepopulated with some precision values, as described in the table below, mostly based on use of the Kestrel to measure atmospheric conditions. Bryan Litz’s Accuracy and Precision for Long Range Shooting provides several good estimates for rifle accuracy and muzzle velocity variation. These values can be changed to match the user’s experience, such as muzzle velocity variations measured by a chronograph.

The precision numbers are assumed to be one standard deviation values, which is a common measure for the precision of tools making measurements. In this case, 67% of measurements will fall within +/-1 standard deviation of the mean; 95% will fall within +/-2 standard deviations.

Overview of parameters

Once the fields are populated, the probability of hit is computed on the fly, which will compute how each of those error sources influence the bullet’s flight, and show the overall probability of hit.

In addition to adjusting the parameters above, the WEZ tool also accepts different target shapes and sizes. The IPSC target is standardized and its dimensions locked, but the rectangle and circle targets can be adjusted to match actual targets in use.

Target Parameters

 

Wind Profile Analysis

To use WPA tool, simply click on Wind Profile Analysis from the Home Screen. This allows for a user to enter a non-uniform wind profile downrange, and view its effects on a bullet’s point of impact. Up to ten distinct regions of wind can be entered in the tool, with both range and crosswind accepted.

In order to use the Wind Profile Analysis you have entered, click the HUD from the WPA screen. If you back out, and click the HUD from any other menu, it will use the wind value under environment. To use the Range Card with the inputs from the WPA

Position –  Here you input the range you measured the wind at.

Range Wind –  Here you input the magnitude up and down range wind. Positive numbers for winds from 12 o’clock, and negative numbers for winds from 6 o’clock.

Crosswind –  Here you input the magnitude of the crosswind. Positive numbers for right, negative numbers for left.

Active –  Here you are able to enable/disable positions you are not using.

Connection Status –  The Wind Profile Analysis can be linked up with a Wind Sensor Array. Wind Sensor Arrays are built to order, and allow for long range down range wind sensing. WSA can be GPS Timed/Located in the settings.

Note: The convention is that wind region #1 runs from the shooter to the position value in the region 1 box (so from 0 to 100m in this screen shot). Wind region #2 spans from the position in box 1 to box 2, and so on. If the target range is greater than the last wind region position, then the wind between that range and the target is assumed to be 0.

 

Output Section

The usefulness of a ballistics app is not limited to putting out an accurate, numeric windage and elevation correction.  A truly user friendly ballistics app will display outputs in a convenient form that a user can apply quickly and easily while minimizing the chance of mistakes.  The following sections will review the various forms of output available from the Applied Ballistics Tactical App.

Fire Solution Control (HUD)

Fire Solution Control, or HUD is found on most screens. The HUD displays your current Elevation and Windage adjustments along with WEZ, TOF (Time of Flight), Remaining Energy, Target Lead, and current Output Units. The design of the HUD has 2 parts

Important Note: Clicking on the HUD at any time will take you to the Target Engagement Screen (Range Card)

Output Area 1 –  With 3 main blocks. Section 1 is Elevation with the Range under it. The range will show the output units next to it. To change the output units, you need to change the units used in the Target Screen. Section 2 shows Wind 1 & 2 firing solutions. Under them you will find Wind 1 Speed/ Wind 2 Speed @ Wind Direction. To adjust these units, you do so under Environment Screen. Section 3 is your WEZ Probability. This displays the probability of hitting the target with the first round. See Weapon Employment Zone for more information.

Output Area 2 –  You will also notice 4 outputs under the main section. Section 1 is your current output units (MILS, MOA, IPHY), which can be adjusted in the Settings. Section 2 is TOF (Time Of Flight). This tells you how long the bullet will take to reach the current range in the HUD. The third section is remaining Energy. This tells you the amount of energy the bullet will impact with, at the given range in the HUD. The final section is Target Lead. If you input a moving target speed in the Target Screen it will update with the correct hold over to hit a moving target at the given range in the HUD.

 

Target Engagement Screen

The range card is accessible by clicking anywhere on the Fire Control Solution Panel from any screen.  By clicking on the solution, a range card is displayed that shows the ballistic computation at user-set increments, accessed by clicking the Settings button from the Action Bar.  The range card shows the range to target, elevation, windage, the target lead, time of flight, and the velocity of the bullet in Mach.  The range card shows MACH in orange where the bullet is in the transonic region and then in red where the bullet is subsonic.

Range Card Characteristics –  From the settings menu, you can access and adjust the range cards maximum range out to 3500, or the Step Size of each range (5, 10, 25, 50, 100 increments). To access the settings simply press the icon in the upper right corner and select settings.

Updating Environmental Information –  You may update the environmental information from the range card at any time by selecting the appropriate method from the buttons located on the range card. If you need to make quick wind adjustments you may do so by using the Swipepad then selecting the recalculate range card button. The Fire Control Solution is updated in real time when using the Swipepad but the Range Card is not.

Updating Target Information –  You can update your Latitude and targets Azimuth by selecting the appropriate buttons from the range card. This can allow for rapid on the fly adjustments to the direction of fire to the target.

Updating Range Card If you have made any changes involving either the targets direction, your location, or the environment and need the range card to reflect those changes, simply click on the recalculate range card button. If you have made any changes it is always advisable to update the range card after words. 

Note: The Range Card has a couple features that allow for quick adjustments on both the Fire Control Solution (HUD) and on the Range Card.

Clicking a Range Value –  Clicking on a range value in the table will automatically insert that range value in to the HUD. Example, if you click 1200 on the table, 1200 will then be inserted in to the Elevation portion of HUD. If you click 500 on the table then 500 will be inserted in to the HUD. Note: This is best for rapid range adjustments in the HUD.  

Using the Swipepad –  If you need to make quick wind or range adjustments you may do so by using the Swipepad, then selecting the recalculate range card button. The Swipepad has indicator arrows and a vertical bar designating which side of the table adjusts range, and which adjusts wind. The wind speed can be adjusted from either side. The HUD is updated in real time when using the Swipepad but the Range Card is not and therefore you must recalculate the table. When swiping for wind speed, if you increase the wind speed, both wind 1 and wind 2 are updated. Important Note: If you decrease the wind speed, only wind 1 is decreased. If you need to reduce Wind 2 you must swipe all the way to 0. This will reset the wind speed 2 to 0, then you may increase it to the desired level.

Rangefinder Bluetooth Connection –  The Rangecard can be updated using the Applied Ballistics Dongle and connecting to a PLRF 15/25, Vector 21, STORM, RULR, RAPTAR.

 

Ballistic Calibration

The ballistic calibration feature allows a user to calibrate the ballistic solution based on observed bullet drop at range. There are two parameters that can be calibrated: muzzle velocity (MV), and drop scale factor (DSF). The Ballistic Calibration Screen is available from any screen via the Android Action Bar.

Due to uncertainties involved with modern chronographs, velocity measurements are not always as accurate as we would hope.  Therefore the first variable a shooter should attempt to calibrate is muzzle velocity.  The recommended range for muzzle velocity calibration is where the bullet is at Mach 1.2 in its flight.  If you have multiple ‘observed’ data points, use the farthest high confidence data point available for muzzle velocity calibration.  The interface will provide recommended ranges range in which to calibrate muzzle velocity based on the bullets remaining velocity.  After you’ve entered the observed range/drop pair, the application will automatically calculate the adjusted muzzle velocity and the application will display the actual MV that results in your observed drop.  Click Use MV and the calculated MV will be applied and the elevation and windage shown at the top of the screen will be automatically updated.

For long-range shooting, the drop scale factor (DSF) is used to refine the ballistic solution in subsonic flight using a similar process. By firing rounds at long range, and noting the true drop, a drop scale factor is computed. Clicking Use DSF populates the DSF value and Mach number into the View DSF Table.

Note: Turret Tracking, and other errors are easily incorporated when the DSF and MV are used properly.

Viewing the DSF Table –  By scrolling down, the full DSF table is presented based upon all DSF values that have been calculated and saved. The table can be cleared by clicking on the Clear DSF button.

Ballistic Calibration Guide: Open Ballistic Calibration Article

Settings
The application settings are accessible from the Android Action bar.  Several items may be adjusted such as the maximum range on the range card, the range card step size, and the output units. 

Probability –  The application has a fully function WEZ program. The header may be used to display the probability of a first time shot at an unknown location.

Range Card Max Range –  Adjusting this will allow you to limit or expand the maximum of the range card up to 3500. This can help improve the time it takes to populate the range card with small step distances by limiting the maximum distance.

Range Card Step –  This setting adjusts the distance between each range step on the range card. These can be set to (5, 10, 25, 50, and 100).

Output Units –  This setting adjusts the current output units. You have 3 choices. MILS, MOA or Inches (Inches is also known as IPHY or Shooters MOA).

Software Version – Software Version – Note you will find the software version here as well. 2.01 Core 40. The number 201 in this denotes the build number (201 in this case). Database is Bullet Database Number (400 in this case)

Device Integration Section

Connecting to a Kestrel 4000 Series

The AB Tactical application has the capability of receiving external sensor input for the environmental conditions from a Kestrel device over a Bluetooth connection.  To connect to a Kestrel, the Kestrel must have Bluetooth and it must be enabled.  Please review to the Kestrel user manual for how to activate the Bluetooth.  Once the Kestrel Bluetooth is active, it must be paired with your device through the Android pairing procedure.

Procedure:

Step 1: Select the K4 Icon from the Environment or Target Engagement Screen

 

 

 

Step 2: A list of available Bluetooth that have been paired with the device are listed. The Kestrel devices all begin with K####-###### With the last 6 digits being the devices serial number.

 

 

 

Results: Once the Kestrel is connected and data is received, the entries will be grayed out. (Seen highlighted in red here)

 

 

 

Pairing procedures vary from device to device however; the Bluetooth settings are usually available from the Settings à Bluetooth menu.  Most often, there is a button labeled “Search for Devices” that is shown.  Click that button and choose to pair with the Kestrel if it is found.  A PIN is required to pair with the Kestrel which is available via the Info screen located within the Bluetooth menu on the Kestrel.  A Kestrel Drop does not require a pin to pair.  

After the pairing procedure is completed, it can be selected from the AB Tactical application by clicking on the Kestrel or Drop Icon from the Environment screen or from the Target Engagement screen.  If you are connecting to the Kestrel Device, a list of paired devices will be shown.  Click on the device name to use it. Establishing a connection will appear at the bottom of the screen. Once you wish to disconnect from the Kestrel Device, simply click the Kestrel Icon and the connection will be disabled.

Important Note: Live updates from the Kestrel 4000 series devices will occur at the rate of approximately 1 time per second.  The AB Tactical application applies the environmental conditions from the Kestrel directly to the Main Screen, Environment Screen, and the Target Engagement Screen.  The wind speed from the Kestrel is populated into the Wind Speed 2 parameter since Wind Speed 1 is editable via the Environment Screen.

 

Connecting to a Kestrel 5000 or Drop

To connect to a Kestrel 5000 series or Drop, select the K5 or Drop button from the Target Engagement or Environment Screen. Upon pressing it, it will immediately scan for Kestrel devices.  When you see your device, click on it to connect directly to it.  You will then enter a screen where you have a Disconnect/Connect button in the top right, and an On/Off switch at the bottom. The Kestrel 5 series and Drop 3 do not relay data constantly like the K4500 do. They only gathers information on demand when you request it. Also the Drop device you choose will affect the data provided. Only the Drop 3 provides Station Pressure, the Drop 1 provides only Temp, the Drop 2 provides Temp/Humidity, and the Drop 3 provides a full array of data. Keep in mind which Drop device you are linking to.

Procedure:

Step 1: Select the K5 icon from the Target Engagement or Environment Screens.

Step 2: A list of available Kestrel 5000 or Drop Devices that have been detected in range with the device are listed.

Note: You do not need to pair these devices like the old 4000 series.

 

 

 

Step 3: After the device has been selected, do not switch it to on, until the upper right reads connected. You can see under State is connected.

 

 

 

Step 4: Once you flip it to on, it then begins transmitting atmospheric data to your mobile device. At this point you press the devices back button until you return to Environment screen.

 

 

 

Step 5: Notification appears briefly indicating that the information has been populated.

 

 

 

Results: Once you hit the back button and return to the previous screen, the data will update. (Seen highlighted in red here)

Wind is not automatically populated with the K5 or D3 devices.

Important Note: Pressing the button on the front of the Drop 3 only makes it “Visible” so you can pair it to a device. It does not push atmospheric data when you press the button. The DROP does not maintain a continuous connection. It is on demand, and only updates when you repeat the process seen above as needed. This is to ensure the DROP battery is not rapidly drained by being left connected to the device.

 

 

Uploading Profiles to a Kestrel 4500 AB

AB Tactical has the ability to send (upload) your current weapon profile to a Kestrel, and other Applied Ballistic Compatible Devices via Bluetooth like the RAPTAR-S & REM 100/200. This does require you have a Bluetooth version of the devices you wish to upload to. There are a couple of settings that must be enabled first in order to do this. Also before you start this process ensure you have completed your weapon profile in AB Tactical. See the notes before proceeding to the demonstration. Kestrel Device Bluetooth must be on, and the Kestrel must be paired to the device you are running AB Tactical on.

WARNING for Kestrel Sportsman Users: You can use this system to send a profile to a Kestrel Sportsman, HOWEVER. You need to verify you are using a G1 or G7 BC first. You can do this from the Bullet Screen. If you attempt to upload to a Kestrel Sportsman with a Custom Drag Curve, it will successfully upload, HOWEVER your BC will be set to 1.0 which will give you an error in your firing solution.

The proper steps are shown and described below for uploading a profile to the Kestrel (or other AB devices).

Procedure:

Step 1: Access the Main Menu and scroll down to Gun Selection on the Device. Press Enter.

 

 

 

Step 2: Ensure “New Gun” is set to “On” If its Off simply press the right key pad arrow.

 

 

 

Step 3: Press the back button (Power Button), and select AB Mode.

 

 

 

Step 4: In AB Mode scroll down and highlight “Gun”. If you already have multiple guns in the Kestrel, then press the right key pad arrow until the selection reads “New Gun”. Then proceed over to AB Tactical.

 

 

 

Step 5: From any screen access the Menu and select “Send Profile to Device”

 

 

 

Step 6: A list of avaliable Bluetooth devices will open. Select the Device you wish to upload to.

 

 

 

Step 7: AB Tactical will return to your previous screen and a notification will pop up with “Establishing a connection to the device”

 

 

 

Step 8: If done correctly the Gun will change to (*USERGUN#) on the Device. This should happen within a couple of seconds. If this does not happen in 30 seconds then the upload failed. Note: Your not done yet

 

 

 

Step 9: Select the weapon you just uploaded (press enter) and verify all the data is correct. Also make any adjustments you need to the Units and Click values for the turrets. Naming is optional, and not required to upload multiple profiles this way. Simply return to step 4, set to New Gun and upload the additional profiles.

 

System Requirements

  • Android v5.0 or higher
  • Minimum 275MB of Free Ram
  • GPS is required for Latitude and Internet base Weather Stations.
  • Internet is required for Weather Station Atmosphere.
  • Bluetooth support is required for Kestrel Integration
  • An accelerometer is required to use the Look Angle acquisition tool.
  • Region and Carrier Limitations: This app is not approved for all regions and/or carriers at this time. Some carriers may choose to block this app due to the nature of its content.

Not Required:

  • You do not need GPS, Internet, Bluetooth, or Cell Service to run calculations.