ADI Ammunition 223 Remington 55 Grain Sierra GameKing (900pk)With uncompromising quality and attention to detail, our ammunition is built on over 130 years of experience in propellant and ammunition design. ADI World Class powders, ammunition and components are synonymous with precision, performance and unrivaled perfection. Trusted by the worlds most discerning markspeople. Developed almost 40 years ago, there are few projectiles in the world that can provide the exceptional accuracy and flat trajectory seen