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. Brass Cases In addition to Hornady target friendly, non-steel core bullets in a variety of offerings, Frontier Cartridge features brass cartridge cases and military-grade boxer primers and propellant. *NOTE: HAT MAY VARY. Product Specifications Caliber: 223 Remington Bullet Weight: 55gr Bullet Type: Full Metal Jacket (FMJ) Muzzle Velocity: 3,240 fps Quantity: 250 Rounds per Box