Black Hills Remanufactured Ammunition is load in "Once Fired" military brass and is produced on the same production lines as their new brass ammunition. This Black Hills Ammo is one of the most exceptional values we know of in the premium ammunition market. Often in short supply, this Black Hills product should be purchased quickly and in quantity when available, we often experience long delays in resupply. This ammunition is completely non corrosive and top quality in every way.