The affordable Lee 50 BMG Ram Prime is crafted from high-quality materials in the United States, specifically designed for large series .50 BMG cartridges. Compatible with the Classic Cast Press, this ram prime offers enhanced performance for high-powered rounds. Please note that shell holder priming holes from other manufacturers may be too small to accommodate this ram prime. Included with the ram prime is a punch and its design allows it to function during the press's upstroke, providing more leverage and a more positive seating feel. This innovative feature ensures a reliable, consistent priming process, making it an excellent addition to your reloading setup for the .50 BMG.