ACE3/docs/wiki/feature/atragmx.md

layout	title	description	group	category	parent	mod	version
wiki	ATragMX	Handheld ballistics calculator.	feature	equipment	wiki	ace	major minor patch 3 0 0

1. Overview

1.1 AtragMx from Horus Vision

Horus ATragMX software considers atmospheric conditions, gun data, ammunition, range, speed and muzzle velocity to calculate precise aiming solutions with "come-up" results – and even accounts for Coriolis and spin drift effects. ATragMX, loaded on a handheld computer made by TDS Recon, is easy to use and lightning-fast. The Recon meets the rigorous MIL-STD-810F military standard for drops, vibration, humidity, altitude and extreme temperatures.

2. Requirement

• [Advanced Ballistics module enabled]({{ site.baseurl }}/wiki/feature/advanced-ballistics.html)

3. Usage

3.1 Opening the AtragMx

3.1.1 Interaction Menu

• Open the self interaction menu Ctrl + ⊞ Win
• Select Equipment
• Select Open AtragMx

3.1.2 Custom key

• OPTIONS / CONTROLS / CONFIGURE ADDONS / ACE3 Equipment

3.1.3 Inventory

3.2 Example with M14 and default 7.62mm 20Rnd Mag

Start of the mission:

• Open the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) and check the cartridge, the zeroed distance, the rifle twist, the muzzle velocity at 15°C and the bore height.

• Open the AtragMx and the Atmsphr column, select Default and Done. [Manual]
• Open Gun the 7.62x51mm M80 in the GunList. [Manual]
• Select E (English unit) at the top right. [Manual]
• Open the Gun column, check and update the Bore, the Rifle Twist and Done.
• Select M (Metric unit) at the top right.
• Open the Gun column, check and update the Muzzle Velocity, the Zero Range and Done.
• The Muzzle Velocity Table will be automatically updated. [Manual]
• (Must be edited manually for specific cartridges according with the range card)
• Optionally, Save Gun and Done in the GunList.

In position:

• Update the Atmsphr column with the [Kestrel 4500]({{ site.baseurl }}/wiki/feature/kestrel4500.html) and Done.
• Check the new Muzzle Velocity in the Gun column.
• Update the Target column (the [wind arrow]({{ site.baseurl }}/wiki/feature/weather.html) will also help). [1] [2] [3] [4]
• The latitude for all common maps can be found in the [ACE3 Github]({{ site.ace.githubUrl }}/blob/master/addons/common/functions/fnc_getMapData.sqf).
• Apply the vertical and horizontal elevations on the [scope]({{ site.baseurl }}/wiki/feature/scopes.html).
• Control the breath and press.

3.3 Example with Truing tool

Start of the mission:

• Select Drag Coef Table in the Options menu. [Manual]
• Add the ZR and the C1 (Gun column) in the table and Done.

In position:

• Open the Truing Drop in the Options menu. [Manual]
• Add the actual Target Range in the SUPER column and Calc.
• Add the same Target Range in the SUB column and Calc.
• Apply the actual scope elevation in the Drop field and Calc.
• Accept the new C1, Gun column and Elev are updated.
• The Drag Coefficient Table will be automatically updated. [Manual]
• Optionally, Save Gun and Done in the GunList.

• If a new Target Range is applied in the Target column, select Drag Coef Table in the Options menu and Done.
• The ballistic coefficient C1 and the elevation Elev will be recalculated.

3.4 Example with overwritten zero distance

• The Default zero distance can be overwritten with the [Scopes module]({{ site.baseurl }}/wiki/feature/scopes.html) or the [Settings Framework]({{ site.baseurl }}/wiki/framework/settings-framework.html).
• In this case, the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) will be automatically updated, NOT the AtragMx.
• Open the AtragMx and the Atmsphr column, select Default and Done. [Manual]
• Open the Gun column, check and update the Zero Range and Done.

3.5 Example with Add New Gun in GunList

• Open the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) and check the cartridge, the bullet diameter, the bullet weight and the muzzle velocities.
• Open the AtragMx and the Atmsphr column, select Default and Done. [Manual]
• Select Add New Gun in the GunList. [Manual]
• Add a New Gun Name and Open Gun.
• Select E (English unit) at the top right. [Manual]
• Open the Gun column, check and update the Bullet Weight (grains), the Bullet Diam (inches) and Done.
• Select M (Metric unit) at the top right.
• Open the Muz Vel Table in the Options menu or click on MV in the Gun column.
• Edit manually the Muzzle Velocity Table according with the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) and Done. [Manual]
• The C1 coefficient of the bullet can be found with the Eden Editor Config Viewer:

configfile >> "CfgAmmo" >> "Range card cartridge" >> "ACE_ballisticCoefficients"

configfile >> "CfgAmmo" >> "Range card cartridge" >> "ACE_dragModel"

• The AtragMx accepts only G1 ballistic coefficient.
• G7 ballistic coefficient can be converted, for example, with the online JBM Ballistics Calculators.
• Optionally, Save Gun and Done in the GunList.

Note: The ballistic coefficient can be calculated by using the 360 Degree Training Course mission as a chronograph at different distances and JBM Ballistics Calculators for example, an another ballistic software at your own convenience, or the AtragMx Truing Tool.

Example direct conversion with 0.408 Cheytac 305 grains G7 BC 0.279 at 2000 meters 15°C:

4. Official Manual and Horus Videos

• [Official Manual]({{ site.ace.githubUrl }}/blob/master/extras/manual_Horus_ATrag-v385.pdf)
• Horus video part1
• Horus video part2

5. Dependencies

{% include dependencies_list.md component="atragmx" %}