50 Caliber RRA 12.7mm Ball and Tracer – Reduced Range Ammunition

The 0.50 caliber 12.7mm RRA Ball and Tracer ammunition provide the same ballistic characteristics of full range operational ammunition up to 800m.

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International Ammunition Association Journal Index

Steam Workshop::paytongamingnstuff's realism collection

International Ammunition Association Journal Index

Firearm

When they say that 50 BMG is 12 mm, do they mean only for the bullet or the whole cartridge? - Quora

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When they say that 50 BMG is 12 mm, do they mean only for the bullet or the whole cartridge? - Quora

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What is it about a .50 caliber round that makes it so much more devastating? - Quora