Patriot Sports 223 Remington 55gr FMJ Rifle Ammo - 20 Rounds - The Patriot Sports 223 Remington 55gr FMJ cartridge is manufactured on state-of-the-art equipment using only premium components. The cartridge is designed as an all-purpose cartridge for target shooting, sport, training, and duty. FEATURES: Case Material: Brass Alloy Bullet Core Material: Lead Alloy Bullet Jacket Material: Brass Alloy Bullet Type: Full Metal Jacket (FMJ) Primer: Boxer Type, Small Rifle Energetic Compound: Double Based Smokeless Powder Power Dose: 1.68g / cartridge Bullet Velocity: 3280 FPS Main Chamber: 3500 bars Grouping at 100m: 70mm Production and testing standards: International standard C.I.P.