Liberty Ammunition's Silverado Lead-Free rifle catridges are monolithic deep-cavity fragmenting rifle rounds the world's first high-performance .223 Remington rounds that deliver superior lethality. Made of nickel-plated copper bullets the rounds leverage Liberty's proven and patented technologies to deliver superior range accuracy and terminal effect. The result - stopping power of more than 1100 ft. lbs and fragmentation of up to 9 pieces while achieving maximum effectiveness. - Caliber: 223 Remington - Bullet Type: Hollow Point Boat-Tail - Bullet Weight: 55 gr - Muzzle Energy: 1100 ft / lbs - Muzzle Velocity: 3000 fps - Rounds Per Box: 20