Auditing guns & magazine volumes

Is your feature request related to a problem? Please describe.
Guns and magazines are mostly still defined volumetrically by 250ml * n for both their own volume and the magwell's, in the case of the former. In general: -Pistols & magazines are too big Example: Glock 17(which is the full-size version, the 19 is both more common and less spacy but defined also as 500ml) ingame is defined as 500ml Using their official measurement for overall length as scale & multiplying by width gets a volume of 435ml. -Longguns are too small

Describe the solution you'd like
Running all guns & magazines through ImageJ(#33711, #34666, and #36838 used it) to get their volumes as gun-shaped prisms, then updating spare ammo containers & holsters on some basis of them.

Progress:

• 12 mm
• 20x66 mm
• .22 LR
• .223 Remington
• .270 Winchester
• .300 Winchester Magnum
• .30-06 Springfield
• .300 AAC Blackout
• .308 Winchester
• .32 ACP
• .38 Special & .357 Magnum
• .380 ACP
• .38 Super
• .40 S&W
• 40x46 mm
• 40x53 mm
• .410 shot
• .44 Magnum
• .44 Paper
• .45 ACP
• .454 Casull
• .45-70 Government
• .45 Long Colt
• HK 4.6x30mm
• .460 Rowland
• .50 BMG
• .500 S&W Magnum
• 5.45x39
• 5.7 x 28 mm
• 66 mm
• .700 Nitro Express
• 7.62x39 mm
• 7.62x54mmR
• 7.62x25 mm
• 84x246mm
• 9mm Parabellum
• 9mm Makarov
• Anti-tank Guided Missiles
• Blunderbuss
• Flintlock
• 12 gauge
• Flaregun