The Winchester USA 7.62x51 mm Remington ammunition features a 147 grain, full metal jacket projectile capable of traveling 2800 feet per second giving it 2559 foot pounds of muzzle energy designed for target shooting and practice. The load features non-corrosive, reloadable brass casing to improve feed reliability and prevent damage to the firearm's chamber. The full metal jacket consists of a soft core, encased in a harder metal shell to maintain their composure and trajectory for greater penetration and less expansion