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.

50 Cal M2 MG (B-GL-385-005-PT-001), PDF, Machine Gun

racktrendz's Buysell - Pinkbike

50 Cal M2 MG (B-GL-385-005-PT-001), PDF, Machine Gun

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

International Ammunition Association Journal Index

Full Text:Volume 1C - Criminal Law Notebook

I have a bullet that has S.L. 43 on the bottom of it. Is this equivalent to a .50 cal round? - Quora

Small Caliber Ammunition - General Dynamics Ordnance and Tactical Systems

MCWP 3-15.1: Machine Guns and Gunnery - História