First Breach Rifle Bullets .223 55 Grain Full Metal Jacket Boattail 250 Bullets. First Breach smelts its own lead wire from scratch to create its own lead cores and produces new projectile cups to form projectile jackets by high precision machining. First Breachs rifle bullets contain a higher antimony concentration for enhanced penetration. Each and every production line includes a series of quality control checkpoints. All of First Breachs products are qualified through First Breachs MOCs (Match-grade Ocular Checkpoints) as well as our MLTs (Match-grade Laser Terminals) which utilize more than a dozen lasers and a 3D imaging system to measure the specifications and composition of every single unit. In addition to these checkpoints First Breach pulls units from its lines every 15 minutes to perform further tests in our QA (Quality Assurance) laboratory. First Breachs projectiles are designed for high velocity match-grade performance and minimal jacket thickness variation. Specifications for First Breach Rifle Bullets .223 55 Grain Full Metal Jacket Boattail: Manufacturer: First Breach Gun Type: Rifle Bullet Type: Full Metal Jacket (FMJ) Caliber: .223 Remington Cartridge Type: Brass Bullet Weight: 55 grain Projectile Caliber: .223 Caliber Package Contents: First Breach Rifle Bullets .223 55 Grain Full Metal Jacket Boattail First Breach 30009: Rifle Bullets .223 55 Grain Full Metal Jacket Boattail 250 Bullets