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Incorrect muzzle velocities
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Description

The following firearms appear to have incorrect muzzle velocities.

  1. Mosin-Nagant = 930 m/s
  2. M4A1 = 930 m/s
  3. IZH-43 = 900 m/s
  4. .357 Magnum = 260 m/s

They should be changed to the following correct (real life) values.

  1. Mosin-Nagant should be about 865 m/s (930 m/s is the M16's value).
  1. M4A1 should be about 885 m/s (930 m/s was for the longer M16, there is no M16 at the moment, so the velocity should be the M4 value).
  1. IZH-43 should have two muzzle velocities: about 475 m/s with slugs, and about 405 m/s with pellets. This is assuming it has full-length hunting barrels, and not shorter "coach gun" barrels of 18-20 inches (in that case, it would be about 430 m/s for slugs and 365 m/s for pellets).
  1. .357 Magnum should have a muzzle velocity of 380 m/s. This is correct for the most common 158-grain ammunition from the most common barrel length.

The affected magazines are as follows:

  1. CLIP_762_5Rnd, B_762x51_Ball_Single, B_762x51_Ball_Five
  2. M_STANAG_30Rnd, B_556x45_Ball_Single
  3. B_12Gauge_Pellets_Double, B_12Gauge_Slug_Double
  4. M_357_Speedloader

Details

Legacy ID
2955949925
Severity
None
Resolution
Open
Reproducibility
N/A
Steps To Reproduce

N/a, check config

Event Timeline

Bohemia edited Steps To Reproduce. (Show Details)Dec 18 2013, 1:45 AM
Bohemia set Category to category:weapons.
Bohemia set Reproducibility to N/A.
Bohemia set Severity to None.
Bohemia set Resolution to Open.
Bohemia set Legacy ID to 2955949925.May 8 2016, 2:19 PM
Bohemia added a subscriber: R834.Dec 18 2013, 1:45 AM
SoldF added a subscriber: SoldF.May 8 2016, 2:19 PM
SoldF added a comment.Dec 18 2013, 5:33 PM

What are the velocities in the game now then?

  1. Mosin-Nagant = 930 m/s
  2. M4A1 = 930 m/s
  3. IZH-43 = 900 m/s
Bohemia added a subscriber: Bohemia.May 8 2016, 2:19 PM

Updated, the .357 Magnum also has an incorrect velocity (it's currently the same as .45 ACP, in reality it operates at far higher pressures and far higher velocities, hence "Magnum").

In 0.36.115.297 Patch this config
class Ammo_556 : AmmunitionItemBase {

    displayName = "5.56mm Rounds";
    initSpeed = 884;
};

class Ammo_45FMJ : AmmunitionItemBase {

    displayName = ".45ACP Rounds";
    initSpeed = 260;
};

class Ammo_762 : AmmunitionItemBase {

    displayName = "7.62mm Rounds";
    initSpeed = 860;
};

class Ammo_762x39 : AmmunitionItemBase {

    displayName = "7.62x39mm Rounds";
    initSpeed = 730;
};

class Ammo_12ga_Pellets : AmmunitionItemBase {

    displayName = "12 Gauge Buckshot";
    initSpeed = 404;
};

class Ammo_357 : AmmunitionItemBase {

    displayName = ".357 Round";
    initSpeed = 360;
};