federalpremium gold medal large rifle magnum match primers #155M are engineered for competitive shooters and reloaders who demand superior performance. These match-grade primers are designed to deliver reliable and consistent ignition in magnum pistol cartridges, ensuring uniform pressure and accuracy with each shot. Whether for precision shooting, competition, or high-performance hunting rounds, Federal #155M primers provide the quality needed to achieve top-tier results. Crafted with the highest quality materials, they offer dependable performance in every load, making them the go-to choice for serious reloaders.