PMC's Bronze Handgun Ammo is manufactured with the same quality and dependability built into the Starfire ammunition. All PMC cartridges must pass through the rigorous inspection of the electronic powder check station. If the propellant in any cartridge varies by as little as two-tenths of one grain, the system stops, and that cartridge is discarded.Specifications:Brand PMCCategory Centerfire Rifle RoundsCaliber 50 BMGModel BronzeBullet Weight 660 grRounds Per Box 10Casing Material BrassApplication Target,Hunting,DefenseBoxes Per Case 20Bullet Type Full Metal Jacket Boat-Tail (FMJBT)Muzzle Energy 1368 ft lbsMuzzle Velocity 3080 fps