Take your range training and shooting competitions to the next level with this Winchester 5.56x45mm M855 Green Tip Full Metal Jacket 62 gr. Rifle Ammunition. This .223 / 5.56 NATO Ammo developed by Winchester are made with high-quality brass cartridge cases and are guaranteed to provide consistent precision with every shot. Winchester 5.56 Full Metal Jacket 62 gr. Centerfire Rifle Ammo delivers amuzzle velocity of 3,060 ft/s, and we have bulk ammo options available for high-volume shooters. Stay on target and dominate the competition while using Winchester 5.56x45mm NATO FMJ 62 gr. Rifle Ammunition.