Winchester Ammo Unprimed Cases 300 Blackout Rifle Brass 100/Bag

The Winchester WSC300BLKU Unprimed Cases are precision-manufactured brass rifle casings for the .300 AAC Blackout (7.62x35mm) cartridge, packaged in a 100-count bag for handloaders building custom ammunition. Built by Winchester, these new, unprimed cases deliver the consistent dimensions and durable brass construction needed for a reliable foundation on the reloading bench.