300 PRC Brass Mixed Headstamps Washed and Polished Unprocessed Brass for Reloading 100% Brass Casings 25 Casings Once Fired 300 PRC brass is designed for precision and long|range performance. The 300 Precision Rifle Cartridge (PRC) is engineered for accuracy and superior ballistics at extreme distances. This cartridge is a favorite among long|range shooters and hunters seeking maximum power and efficiency. This fired brass is perfect for custom loads.