Features and Benefit of 5.56 ammo
The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO) is an intermediate cartridge developed in the United States and originally chambered in the M16 rifle. Under STANAG 4172, it is a standard cartridge for NATO forces as well as many non-NATO countries. It is derived from, but is not identical to, the .223 Remington cartridge.
Have no doubt: This 5.56×45 ammunition by Winchester will do great by your AR-15 the next time you feel like squeezing off a few shots. But as M855 ammunition it also offers a little something special in the form of its “penetrator” bullet.
Each round in this range pack of 200 has a 62 grain bullet with green paint on its tip. This is the universal indication that the bullet’s tip hides seven grains of steel beneath its gilding metal jacket. Its steel tip is designed to help the M855 bullet more reliably pierce steel plating. Under optimal conditions the M855 bullet also reliably penetrates up to 20” deep in soft tissue, and it has a tendency to break in half during high velocity penetration. This tracks multiple wound channels to more effectively neutralize a threat.
Because its bullet is a little heavier than a regular 55 grain M193 bullet, M855 ammo tends to deliver better accuracy out of a faster twist barrel. (You may incur accuracy issues with a 1:9 or 1:12 twist barrel.) It should also be noted that this ammo is magnetic.
Whether you would use this ammo like any other FMJ range loads or just sit on it for self-defense, you’re bound to appreciate Winchester’s quality brass, responsive primer, and clean burning propellant. These 200 rounds come loose-packed in a simple cardboard box
What is in the Box?