Few cartridges draw a crowd at the range like the 50 BMG, and owners need reliable ball ammunition to enjoy their rifles. This listing is Federal American Eagle 50 BMG 660 grain full metal jacket ammo, MPN XM33C, sold as 100 rounds. It is aimed at 50 caliber rifle owners who want new production, brass cased ammunition for range sessions, long distance steel, and function testing.
The 660 grain full metal jacket is the standard ball weight for the 50 BMG, the 12.7x99mm cartridge developed for the Browning M2 machine gun. Federal labels this load XM33C, a commercial counterpart to military M33 ball. The heavy bullet carries enormous momentum and stays supersonic to long range. A full metal jacket bullet does not expand, so this is target and range ammunition. Make sure your range allows 50 BMG and has a suitable backstop. We do not list a velocity because we could not confirm the published figure for this part number.
This ammunition fits rifles chambered in 50 BMG, also called 12.7x99mm NATO, including the Barrett M82A1 and M107A1, Barrett M99, Serbu BFG-50, ArmaLite AR-50, McMillan TAC-50, and single shot and bolt action 50 caliber rifles from other makers. A common question is whether 50 BMG rifles and ammunition are legal everywhere. They are not. California restricts 50 BMG rifles, and some other jurisdictions have their own rules, so check local law. Another common question is whether 50 BMG ball works in a semi-automatic rifle. Yes. Full power ball like this is what semi-auto 50s are designed to run.
Federal XM33C is new production ammunition, not reloads, made in the USA. It uses reloadable brass cases with boxer primers and non-corrosive components. The listing ships as 100 rounds from one lot, which keeps point of impact consistent during long distance sessions where small velocity changes matter.
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