1000 Rounds of 5.56×45 Ammo by Winchester – 62gr FMJ M855

Details This 5.56×45 M855 ammunition by Winchester is a fine choice for any kind of target shooting with an AR-15, although it does offer something extra: the penetrator tip! Beneath this round’s 62 grain FMJ’s green painted jacket sits a rigid steel insert. This hardens the bullet, thus enabling it to reliably penetrate 1/8” of steel (or 15 to 20” of soft tissue) at ranges up to around 670 yards. You wouldn’t waste this American-made ammo by firing it at regular old range targets, of course! Just take heed that penetrator tips will indeed attract a magnet, so some ranges ban them. This round’s heavier bullet ideally calls for a 1:9 or 1:8 twist barrel, but you can get along all right if you only have a 1:7. The M855 bullet’s cannelure keeps it securely seated in its case until ignition. That case is brand new – if you notice it looks a little discolored around the tip, that is only because Winchester makes the brass suppler and more durable by annealing (aka heat-treating) it. Remove this ammo’s Boxer primers once they are spent and you can reload its cases.