Atlanta Arms Sci Features The Atlanta Arms Sci bullets are manufactured at .224 diameter for use in .223 Rem and 5.56mm rifles giving reloaders a precision projectile sized to match these popular chamberings. Each bullet weighs 55 grain and uses a jacketed lead full metal jacket construction a combination that supports consistent feeding and reliable expansion control for target and practice loads alike. Atlanta Arms builds these projectiles in a climate controlled facility a step that helps keep dimensional tolerances tight from batch to batch. That consistency is exactly what a handloader depends on when chasing repeatable accuracy at the reloading bench. Atlanta Arms backs these bullets with a dedicated team of more than 30 trained personnel focused specifically on precision projectile quality. The company s move to a larger 20 000 square foot manufacturing space reflects a commitment to scaling output without sacrificing the quality control that handloaders rely on. These are component bullets only meant to be seated into prepared brass with the reloader s own powder and primer selections rather than sold as finished ammunition. For any reloader working up loads for .223 Rem or 5.56mm rifles the Atlanta Arms Sci FMJ offers a dependable American-made projectile option. Atlanta Arms Sci Specifications Manufacturer: Atlanta Arms Model: Sci Caliber: .223 Rem / 5.56mm Bullet Diameter: .224 Bullet Weight: 55 Grain Bullet Type: FMJ Bullet Material: Jacketed Lead Count: 250 Available At: GrabAGun