Deadly results from a clean-shooting ammo. Hornady® Superformance® Ammo contains special propellants that increase velocities by up to 200 FPS without increasing recoil. What's more, this Ammo uses Hornady's Gilding Metal Expanding (GMX) bullet that's not only harder and tougher than a copper bullet, but also helps reduce barrel fouling. On top of that, GMX bullets mean more expansion and weight retention, while the boat tail design delivers consistent accuracy.
PLEASE NOTE: While the 5.56x45mm round will fit in a .223 Remington chamber, 5.56 is a military round that is loaded to higher pressure than its .223 counterpart, and is therefore not recommended for use in rifles chambered for .223.