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230 lines
15 KiB
Markdown
230 lines
15 KiB
Markdown
---
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layout: wiki
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title: ATragMX
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component: atragmx
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description: Handheld ballistics calculator.
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group: feature
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category: equipment
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parent: wiki
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mod: ace
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version:
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major: 3
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minor: 0
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patch: 0
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---
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## 1. Overview
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### 1.1 AtragMx from Horus Vision
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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.
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## 2. Requirement
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- [Advanced Ballistics enabled]({{ site.baseurl }}/wiki/feature/advanced-ballistics.html)
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## 3. Usage
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### 3.1 Opening the AtragMx
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#### 3.1.1 Interaction Menu
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- Open the self interaction menu <kbd>Ctrl</kbd> + <kbd>⊞ Win</kbd>.
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- Select `Equipment`.
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- Select `Open AtragMx`.
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#### 3.1.2 Custom key
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- `OPTIONS` / `CONTROLS` / `CONFIGURE ADDONS` / `ACE3 Equipment`
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### 3.2 Example with M14 and default 7.62mm 20Rnd Mag
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**Start of the mission:**
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- Open the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) and check the ammunition: bullet diameter, bullet weight, rifle twist, muzzle velocity at 15°C, zeroed distance and bore height.
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<img src="{{ site.baseurl }}/img/wiki/feature/atragmx1ab.webp" width="1400" height="600" alt="Range card" />
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- Open the AtragMx and the `Atmsphr` column, select `Default` and `Done`.
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- `Open Gun` the 7.62x51mm M80 in the `GunList`.
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- Select `E` (English unit) at the top right.
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- Open the `Gun` column, check and update the `Bore (inches)`, `Bullet Weight (grains)`, `Bullet Diam (inches)`, `Rifle Twist (in/trn)` and `Done`.
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- Select `M` (Metric unit) at the top right.
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- Open the `Gun` column, check and update the `Muzzle Velocity (m/s)`, the `Zero Range (meters)` and `Done`.
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- *Muzzle Velocities (`Options` / `Muz Vel table`) may need a manual update according to the range card.*
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- *AtragMx is configured with `C1 coefficient` according to vanilla weapons and its ammunitions in `GunList`.*
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- *More information about C1: [Example with `Add New Gun` in `GunList`](#35-example-with-add-new-gun-in-gunlist).*
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- Check `Elev` = 0 with `ZR` = `TR` *(if not, open `Gun` column and `Done`)*.
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- Optionally, `Save Gun` and `Done` in the `GunList`.
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**In position:**
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- Update the `Atmsphr` column and `Done`. Requirement: [Kestrel 4500]({{ site.baseurl }}/wiki/feature/kestrel4500.html).
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- *Check the new `Muzzle Velocity` in the `Gun` column.*
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- Update the `Target` column and `Done`. Requirement: [Wind arrow]({{ site.baseurl }}/wiki/feature/weather.html), [Protractor]({{ site.baseurl }}/wiki/feature/advanced-ballistics#22-protractor), [Map Tools]({{ site.baseurl }}/wiki/feature/maptools.html). For advanced tools: [ACE3 Equipment]({{ site.baseurl }}/wiki/feature.html).
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- `Latitude`: *[ACE3 Github]({{ site.ace.githubUrl }}/blob/master/addons/common/functions/fnc_getMapData.sqf) or Eden Editor's Extended Debug Console: Watch:* `ace_common_maplatitude`.
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- `Dir of Fire (deg from N)`: *The value is therefore given as the direction of the barrel axis from true north.* [Horus manual p.14]
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- `Wind speed (m/s)`: *Two wind speed values (low and high) may be entered on the target screen,[...] Lead/Wind2 button on the screen.* [Horus manual p.32]
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- Wind takes into account geographic location, season, time of day, obstacles, altitude and surface roughness: [Wind Profile](https://wind-data.ch/tools/profile.php?lng=en).
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- `Wind Direction (clock)`: *Wind Direction is expressed in clock points.[...], wind is always described in terms of where it is coming from.* [Horus manual p.16]
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- `Inclination Angle`: *The degrees field is marked with a “d” and the cosine field with a “c”.* [Horus manual p.33]
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- `Target Speed`: *Target Speed Assist* [Horus manual p.21]
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- `Target Range (meters)`: *Parameter Limits minimum and maximum values: 25 - 3700 meters.* [Horus manual p.17]
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- Apply vertical (Page Up and Down keys as default) and horizontal (Left Ctrl + Page Up and Down keys as default) elevations to the [scope]({{ site.baseurl }}/wiki/feature/scopes.html).
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- Hold Breath (Left Shift as default) and Fire (Prim. Mouse. Btn. as default).
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### 3.3 Example with Truing tool
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> This process is called “Truing Drop”, or simply “Truing”. It involves taking 2 or 3 real flight data points (finding bullet drop at 2 or 3 places along its flight) and feeding it into the calculation parameters. [Horus manual p.23]
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> The Truing Drop function is opened from ATrag’s main screen by selecting “Options” [...], then selecting “Truing Drop” from the menu that appears. [Horus manual p.23]
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> With C1, you can also insert the new BC into the C1 table (with the target range value), or you can replace the C1 table with the following values:
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> 1. first entry: Zero Range, original C1.
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> 2. second entry: range at 75% of distance between transonic start and subsonic start, with original C1.
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> 3. third entry: range 200 (y/m) beyond subsonic start, with new calculated C1. [Horus manual p.24]
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- Basic example with ammunition 7.62x51mm G7 ballistic coefficient.
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- Open the AtragMx and the `Atmsphr` column, select `Default` and `Done`.
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- `Open Gun` a custom profile in the `GunList`.
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- *More information about custom profile: [Example with `Add New Gun` in `GunList`](#35-example-with-add-new-gun-in-gunlist).*
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- Check `Elev` = 0 with `ZR` = `TR` *(if not, open `Gun` column and `Done`)*.
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- Open the `Truing Drop` in the `Options` menu.
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- Add the actual `Target Range` in the `SUPER` column and `Calc`.
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- Add the same `Target Range` in the `SUB` column and `Calc`.
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- Apply the actual scope elevation in the `Drop` field and `Calc`.
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- `Accept` the new `C1`, `Gun` column and `Elev` are updated.
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- *C1 Ballistic Coefficient vs. Distance Interpolation Table (`Options` / `Drag Coef Table`) will be updated.*
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- Optionally, `Save Gun` and `Done` in the `GunList`.
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<img src="{{ site.baseurl }}/img/wiki/feature/atragmx2.webp" width="1127" height="600" alt="Calculation" />
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- If a new `Target Range` is applied in the `Target` column, the ballistic coefficient `C1` and the elevation `Elev` will be recalculated.
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<img src="{{ site.baseurl }}/img/wiki/feature/atragmx31.webp" width="1123" height="600" alt="Interpolation" />
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<img src="{{ site.baseurl }}/img/wiki/feature/atragmx31a.webp" width="1123" height="600" alt="Extrapolation" />
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### 3.4 Example with overwritten zero distance
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- The `Default zero distance` can be overwritten with the [Scopes Options]({{ site.baseurl }}/wiki/feature/scopes.html), the [Scopes Framework]({{ site.baseurl }}/wiki/framework/scopes-framework.html) or the [CBA Settings System](https://github.com/CBATeam/CBA_A3/wiki/CBA-Settings-System).
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- In this case, the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) will be updated, **NOT the AtragMx**.
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- Open the AtragMx and the `Atmsphr` column, select `Default` and `Done`.
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- Open the `Gun` column, check and update the `Zero Range` and `Done`.
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- Check `Elev` = 0 with `ZR` = `TR` *(if not, open `Gun` column and `Done`)*.
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- Optionally, `Save Gun` and `Done` in the `GunList`.
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<img src="{{ site.baseurl }}/img/wiki/feature/atragmx41.webp" width="1400" height="600" alt="Zero distance 300m" />
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### 3.5 Example with `Add New Gun` in `GunList`
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- Open the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) and check the ammunition: **bullet Class Name**, bullet diameter, bullet weight, rifle twist, muzzle velocities, zeroed distance and bore height.
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- Open the AtragMx and the `Atmsphr` column, select `Default` and `Done`.
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- Select `Add New Gun` in the `GunList`.
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- Add a `New Gun Name` and `Open Gun`.
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- Select `E` (English unit) at the top right.
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- Open the `Gun` column, check and update the `Bore (inches)`, `Bullet Weight (grains)`, `Bullet Diam (inches)`, `Rifle Twist (in/trn)` and `Done`.
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- Select `M` (Metric unit) at the top right.
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- Open the `Gun` column, check and update the `Zero Range (meters)` and `Done`.
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- Open the `Muz Vel Table` in the `Options` menu or click on `MV` in the `Gun` column.
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- Edit manually the `Muzzle Velocity Table` according to the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) and `Done`.
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- The `C1 coefficient` of the bullet can be found with the Eden Editor `Config Viewer`:
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> configfile >> "CfgAmmo" >> "**bullet Class Name**" >> "ACE_ballisticCoefficients"
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> configfile >> "CfgAmmo" >> "**bullet Class Name**" >> "ACE_dragModel"
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- *The AtragMx accepts only **G1 ballistic coefficient**.*
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- *G7 ballistic coefficient can be converted, for example, with the online [JBM Ballistics Calculators](http://www.jbmballistics.com/cgi-bin/jbmgf-5.1.cgi)*.
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- Check `Elev` = 0 with `ZR` = `TR` *(if not, open `Gun` column and `Done`)*.
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- Optionally, `Save Gun` and `Done` in the `GunList`.
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> Note: The ballistic coefficient can be calculated by using the [360 Degree Training Course mission](#5-resources) as a chronograph at different distances and [JBM Ballistics Calculators](http://www.jbmballistics.com/cgi-bin/jbmbcv-5.1.cgi) for example, an another ballistic software at your own convenience, or the [AtragMx Truing Tool](#33-example-with-truing-tool).
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> Example direct conversion with .408 Cheytac 305 grains, G7 BC 0.279 at 2000 meters, ICAO conditions (15°C, 1013.25hPa, 0%):
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<img src="{{ site.baseurl }}/img/wiki/feature/atragmx5.webp" width="1400" height="600" alt="Conversion G7/G1 BC" />
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### 3.6 Connecting AtragMx with Vector 21 and DAGR
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- Requirement: [Vector]({{ site.baseurl }}/wiki/feature/vector.html) and [DAGR]({{ site.baseurl }}/wiki/feature/dagr.html).
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- Open the self interaction menu <kbd>Ctrl</kbd> + <kbd>⊞ Win</kbd>.
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- Select `Equipment`.
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- Select `Configure DAGR` and `CONNECT TO` (DOWN and HELP/SEL) `Vector 21`(HELP/SEL).
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- Equip and use the Vector (B key as default).
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- Check target's [slope distance and azimuth]({{ site.baseurl }}/wiki/feature/vector#23-slope-distance-and-azimuth) (hold both R and Tab keys as default).
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- Open the [AtragMx properly configured before](#32-example-with-m14-and-default-762mm-20rnd-mag) according to current rifle and ammunition.
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- Open the `Target` column: `Dir of Fire (deg from N)`, `Inclination Angle` and `Target Range (meters)` updated with Vector's values.
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### 3.7 Adding AtragMx Presets
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- [AtragMx Framework]({{ site.baseurl }}/wiki/framework/atragmx.html)
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> Scope Base Angle value:
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> - Open the AtragMx and the `Atmsphr` column, select `Default` and `Done`.
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> - `Open Gun` the custom profile (with an arbitrary scope base angle) in the `GunList`.
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> - Check `Elev` value with `ZR` = `TR`.
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> - Open the `Gun` column and `Done`.
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> - Execute `copyToClipboard Str(ace_atragmx_workingMemory select 3);` [LOCAL EXEC] with the Eden Editor's Extended Debug Console.
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> - Paste new value to the `preset`.
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> - After new test, check `Elev` = 0 with `ZR` = `TR`.
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### 3.7 Reseting AtragMx `GunList`
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- Open the Eden Editor's Extended Debug Console.
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- Execute `call ace_atragmx_fnc_clear_user_data` or `call ace_atragmx_fnc_initGunList` [LOCAL EXEC], (`RESTART` eventually needed).
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- The original ACE3 `GunList` will be restored (all `Add New Gun` entries deleted).
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### 3.8 Example with AtragMx and default ballistic (M14, 7.62mm 20Rnd Mag)
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> Note: ACE3 has two external ballistics, the vanilla default ballistic (enabled as default) and the [Advanced Ballistics]({{ site.baseurl }}/wiki/feature/advanced-ballistics.html) (must be enabled). The ACE3 default ballistic doesn't take atmospheric conditions (except wind), powder temperature, rifle twist and Earth effects into account. The AtragMx will need for `Gun` column: `Bore`, `C1 Coefficient`, `Muzzle Velocity` and `Zero Range`. With `Target` column, `Latitude` and `Dir of Fire` are useless. `Atmsphr` column must not be updated.
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**Start of the mission:**
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- Open the [Range Card]({{ site.baseurl }}/wiki/feature/rangecard.html) and check the ammunition: **bullet Class Name**, muzzle velocity, zeroed distance and bore height.
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<img src="{{ site.baseurl }}/img/wiki/feature/atragmx1db.webp" width="1400" height="600" alt="Range card" />
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- Open the AtragMx and the `Atmsphr` column, select `Default` and `Done`.
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- Select `E` (English unit) at the top right.
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- Open the `Gun` column, check and update the `Bore (inches)` and `Done`.
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- Select `M` (Metric unit) at the top right.
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- Open the `Gun` column, check and update the `Muzzle Velocity (m/s)`, the `Zero Range (meters)` and `Done`.
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- `C1 coefficient` of the bullet = `airFriction x -1000`.
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- `airFriction` can be found with the Eden Editor `Config Viewer`:
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> configfile >> "CfgAmmo" >> "**bullet Class Name**" >> "airFriction"
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- *AtragMx is configured with `C1 coefficient` according to vanilla weapons and its ammunitions in `GunList`.*
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- *Spin drift and Earth effects not taken into account, `Options` / `Show Coriolis` can be disabled.*
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- Check `Elev` = 0 with `ZR` = `TR` *(if not, open `Gun` column and `Done`)*.
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- Optionally, `Save Gun` and `Done` in the `GunList`.
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**In position:**
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- **Do not update the `Atmsphr` column.** Default ballistic doesn't take into account temperature, pressure and humidity.
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- Update the `Target` column and `Done`. Requirement: [Wind arrow]({{ site.baseurl }}/wiki/feature/weather.html), [Protractor]({{ site.baseurl }}/wiki/feature/advanced-ballistics#22-protractor), [Map Tools]({{ site.baseurl }}/wiki/feature/maptools.html). For advanced tools: [ACE3 Equipment]({{ site.baseurl }}/wiki/feature.html).
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- `Wind speed (m/s)`: *Two wind speed values (low and high) may be entered on the target screen,[...] Lead/Wind2 button on the screen.* [Horus manual p.32]
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- Wind takes into account geographic location, season, time of day and obstacles.
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- `Wind Direction (clock)`: *Wind Direction is expressed in clock points.[...], wind is always described in terms of where it is coming from.* [Horus manual p.16]
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- `Inclination Angle`: *The degrees field is marked with a “d” and the cosine field with a “c”.* [Horus manual p.33]
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- `Target Speed`: *Target Speed Assist* [Horus manual p.21]
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- `Target Range (meters)`: *Parameter Limits minimum and maximum values: 25 - 3700 meters.* [Horus manual p.17]
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- Apply vertical (Page Up and Down keys as default) and horizontal (Left Ctrl + Page Up and Down keys as default) elevations to the [scope]({{ site.baseurl }}/wiki/feature/scopes.html).
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- Hold Breath (Left Shift as default) and Fire (Prim. Mouse. Btn. as default).
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## 4. Official References
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- [Horus AtragMx Manual]({{ site.ace.githubUrl }}/blob/master/extras/manual_Horus_ATrag-v385.pdf)
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## 5. Resources
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Missions by Ruthberg, author of Advanced Ballistics and its tools:
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- Arma3 Missions folder: [360 Degree Training Course v1.3]({{ site.ace.githubUrl }}/blob/master/extras/ruthberg_missions/360_Degree_Training_Course-Missions.zip), *[Features](https://forums.bistudio.com/forums/topic/171228-sp-360-degree-training-course/)*
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- Eden Editor mission: [360 Degree Training Course Framework]({{ site.ace.githubUrl }}/blob/master/extras/ruthberg_missions/360_Degree_Training_Course-Framework.zip)
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