Frontier Cartridge features Hornady bullets in 223 Rem. Applications range from plinking, target shooting and hunting to law enforcement training and self-defense. Product Features Consistency in Every Cartridge: State-of-the-industry loading techniques and quality control procedures ensure the reliability of every Frontier Cartridge round. Rounds for All Applications: Frontier Cartridge offers ammunition configured for a wide range of shooters and applications, everything from plinking, target shooting and hunting to law enforcement training and self-defense. Military Grade: In addition to Hornady bullets in a variety of offerings, Frontier Cartridge features brass cartridge cases and military-grade boxer primers and propellant. Product Specifications Caliber: 223 Remington Bullet Weight: 55 gr Product Line: Frontier Bullet Type: Full Metal Jacket Muzzle Velocity: 3240 fps Muzzle Energy: 1282 ft-lbs Quantity: 20/Box