Hornady 6mm ARC Unprimed Brass Rifle Cartridge Cases 50 Count

The 6mm ARC does what much larger cartridges can and everything that smaller cartridges can't. It delivers substantially better ballistics than the 223 and offers a much lighter gun/ammo system with 30% less weight than the AR-10/308 Win system. Overall, the 6mm ARC delivers optimum all-range performance and barrel life.