Author: Ruthberg
Author Website:

Requirements: Community Base addons A3

Version: 1.2
Signed: Yes, serverkey included

Short description: This addon introduces a new item to the game, which helps you to calculate firing solutions.

Date: 2015-04-09 12:27

Comments: (5)


ATragMX - Handheld ballistics calculator


This addon introduces a new item to the game, which helps you to calculate firing solutions. It is meant to be used together with the following addons:
* Supports common rifle calibers in Arma 3
* Supports manual entry of gun data
* Multiple Targets (up to four)
* Range Card Generator
* Corrects for Temperature, Humidity, Barometric Pressure
* Target Range Estimator
* Target Speed Estimator
* Clicking Memory
* Handles both English (Imperial) and Metric units of measure
* Display in Mils, MOA, Clicks
* Calculates bullet drop, wind drift, lead (moving targets), time of flight, remaining velocity, remaining energy

Extract into the ArmA 3 Directory, by default this is located in:
32-Bit - C:\Program Files\Steam/Steamapps\Common\ArmA 3\
64-Bit - C:\Program Files (x86)\Steam/Steamapps\Common\ArmA 3\
After extraction it should look like this:
Steam\Steamapps\Common\ArmA 3\@your_mod_folder_name\addons\

You can also use the "Arma 3 Alpha" folder in your "My Documents" folder. Your folder setup could than look like for example this:
mydocuments\Arma3 Alpha\@your_mod_folder_name1\addons\
mydocuments\Arma3 Alpha\@your_mod_folder_name2\addons\
mydocuments\Arma3 Alpha\@your_mod_folder_name2\addons\

When present place the "userconfig" folder into your game install folder, usually:
"C:\Program Files (x86)\Steam\steamapps\common\Arma 3".
You may already have "userconfig" folder from other addons and/or mods in which case it is safe to merge the contents from this archive.

You'll also need to add a Launch Parameter to Steam, in order to do so right-click on ArmA 3 Alpha and click Properties and then Set Launch Options. In the window that opens enter in -mod=@your_mod_folder_name
For using multiple mods you would then do so like this:

You can also use -nosplash to get rid of the splash art and intro videos.

And of course you can also enable and disable community made addons and mods through the in-game Options Expansions menu if you do not want to mess with startup parameters!

When the above information still does not provide you with enough to learn how to install custom addons and mods you can always ask in our Guide On Installing Mods.

Included files:

Step 1: Press Pause on your keyboard to open it (You can change the default key in the controls menu (Configure->Controls->Configure Addons->Addon: ATragMX)
Step 2: Select your cartridge (GunList / Arrow up/down buttons on the PDA)
Step 3: Enter the target range (TR)
Step 4: Enter the inclination angle to the target (IA)
Step 5: Enter the wind speed (WS)
Step 6: Enter the wind direction (WD)
Step 7: Enter the target speed (TS)
Step 8: Enter the temperature (Tmp)
Step 9: Enter the barometric pressure (BP)
Step 10: Enter the relative humidity (RH)
Step 11: Select your scope unit of measurement (MILs, TMOA, SMOA, Clicks)
Finish: Click Calc

Check this usage video:

Target Range Estimator
Allows you to estimate the range of a target if you know both it's real size and image size in your reticle.

Target Speed Estimator
Allows you to estimate the speed of a target if you know it's range and the time the target takes to pass a certain number of hash marks in your reticle.

Relative Click Memory usage
Step 1: Calculate a firing solution
Step 2: Adjust your scope accordingly
Step 3: Click the "Update" button
Step 4: Calculate a new firing solution
Finish: Use the data in the "Rel" column as holdover or to adjust your scope

Recommended Reading
ATrag User Manual

Input fields:
Unit of measurement selector:
D = Dual - Ranges in yards, everything else metric
E = English only, everything imperial
M = Everything metric

Target selector:
A = Data slot one
B = Data slot two
C = Data slot three
D = Data slot four

Gun Column:
BH = Bore Height in cm (metric units) or inches (imperial units)
BW = Bullet weight in grain
C1 = Ballistic coefficient as airFriction * -1000
MV = Muzzle velocity in m/s (metric units) or feet/s (imperial units)
ZR = Zero range in m (metric units) or yard (imperial units)

Atmosphere Column:
Tmp = Temperature in °C (metric units) or °F (imperial units)
BP = Barometric pressure in hPA (metric units) or inMg (imperial units)
RH = Relative Humidity in %

Target Column:
WS: Wind speed in m/s (metric units) or mph (imperial units)
WD = Wind direction as clock value (1-12)
IA = Inclination angle in degrees
TS = Target speed in m/s (metric units) or mph (imperial units)
TR = Target range in m (metric units) or yards (imperial units)

Future plans:
* Support for more rifle calibers
* Support for spin drift and coriolis effect
* Maybe: Ability to create new gun profiles with save/load functionality

- CBA Keybinds compatibility update

- The ATragMX item is now only added to the NATO support box if the optional PBO is used
- Wind is now considered without requiring AdvancedBallistics
- Fixed a bug that potentially prevented it to work properly without AdvancedBallistics

- Fixed barometric pressure being rounded incorrectly when using imperial unit system
- Compatibility update for AdvancedBallistics v2.8

- Fixed wind direction input being flawed (bug was introduced with v0.8)
- Greatly improved the calculation speed (especially the range card calculation is now lightning-fast)
- The range card data output (quality) is now identically equal to the main menu output

- Added support for AdvancedBallistics v1.7 and newer (G1 Ballistic Coefficients)
- You can now add and remove, as well as load and save gun profiles
- You can now use the left/right buttons on the PDA to change the target slot

- Added 5 ATragMX units to the NATO support box (Box_NATO_Support_F)

- Fixed muzzle velocities being read incorrectly from the configuration classes

- Fixed broken humidity input
- Default humidity setting is now 50%
- Added some checks that prevent from entering absurd data

- Fixed humidity being handled incorrectly
- Gun profile data is now partly read from the config

- You can no longer access the PDA without having the corresponding item (class name: "ATragMX") in your uniform or vest
- Adjusted the bullet mass of several gun profiles
- Lea Addon file included

- Default scope unit is now Mil
- Added 5.56x45mm MK262 profile
- Fixed 7.62x51mm profile
- Fixed wind corrections not being calculated after using team switch in singleplayer (requires AdvancedBallistics v0.8)

- initial release

Forum topic:
- BI forums

- Community Base addons A3

- Advanced Ballistics
- Kestrel 4500 Pocket Weather Tracker

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