Winchester - Full Metal Jacket M855 - 62 Grain 5.56x45mm Ammo - 1000 Rounds

Here’s your next infusion of American-made 5.56x45 M855 ammunition! It’s Winchester’s own white box ammo, but it is indistinguishable from the cartridges you would be assigned if you were a member of the U.S. Armed Forces.

The M855 cartridge is loaded with a 62 grain full metal jacket “penetrator” projectile. The bullet’s copper-alloy shell wears green paint on its tip to indicate that its core contains a seven grain solid steel insert (the rear section of the bullet’s core is made of solid lead). Its steel tip toughens up the bullet, thus enabling it to effectively pierce barriers such as sheet metal and plywood.

Take caution, however, because its partial steel core means that this round’s bullet will attract a magnet. The penetrator bullet is also capable of permanently damaging steel targets. But so long as you aren’t shooting steel at a range which doesn’t forbid “magnetic” ammo, 5.56 M855 provides a great way to get a lot of mileage out of your favorite AR. The relatively heavier bullet will conserve more momentum downrange, which gives you a welcome edge in terms of accuracy.

This is new production ammo – not old military surplus – and it has the noncorrosive Boxer primers to prove it. Winchester follows normal convention by not polishing this ammo’s brass cases following heat-treatment. The cases are brand new and reloadable, and their discoloration is strictly cosmetic.