Frontier ammunition a collaboration between Hornady and the Lake City Army Ammunition Plant represents American-made military-grade quality that is optimized for modern sporting rifles. This 223 Remington load features a 55-grain Full Metal Jacket bullet designed to deliver consistent and reliable performance. The brass casings paired with military-grade boxer primers and propellants ensure proper feeding and ignition with every shot.Hornady Frontier Military Grade 223 Remington 55 Gr FMJ50 Rounds Per Box500 Rounds Per CaseNewly-made Reloadable BrassWith a muzzle velocity of 3240 fps and a muzzle energy of 1282 ft/lbs this ammunition is suitable for a variety of applications from varmint hunting and target shooting to personal defense. The Frontier line is known for its commitment to quality using state-of-the-art loading techniques and rigorous quality control procedures to ensure every round performs flawlessly.These cartridges are reloadable and non-corrosive featuring a ballistic coefficient of 0.243 (G1) and a sectional density of 0.157. Available in boxes of 50 Frontier ammunition offers versatility and dependability making it a top choice for both casual shooters and professionals alike. Whether you're plinking at the range or in need of reliable self-defense ammo Frontier delivers consistency and performance you can trust. Order yours today!Shop more 223/5.56 ammo here!Shop our selection of AR-15s for sale here!