Product Description The Peterson Cartridge .300 Winchester Short Magnum (WSM) unprimed brass casings deliver match-grade precision for serious handloaders. Crafted in the USA from premium brass, these cases are engineered to exacting tolerances, ensuring consistent performance and reliable chambering in your rifle. Whether you are a competitive shooter or a dedicated reloader, these cases feature uniform wall thickness, a precision-formed primer pocket sized for large rifle magnum primers, and a durable construction designed to withstand multiple reloads without compromising integrity. Each box contains 50 ready-to-load cases, with 10 boxes per case, making them a smart investment for high-volume shooters seeking quality and consistency. Product Highlights Match-Grade Quality: Manufactured to tight tolerances for consistent dimensions and reliable accuracy round after round. Premium USA-Made Brass: Durable, high-quality brass construction optimized for longevity and multiple reloading cycles. Large Rifle Magnum Primer Pocket: Correctly sized primer pocket for .300 WSM cartridges, ensuring proper primer seating and consistent ignition. Ideal for Precision Reloading: Uniform wall thickness and controlled case weight deliver the consistency demanded by precision and long-range shooters. Convenient Packaging: 50 casings per box with 10 boxes per case, providing ample supply for extended range sessions and competition prep. Specs Brand: Peterson Cartridge Manufacturer Part Number (MPN): 40079-R UPC: 810068271324 Caliber: .300 Winchester Short Magnum (WSM) Firearm Type: Rifle Material: Brass Condition: Unprimed Primer Pocket Size: Large Rifle Magnum Rounds Per Box: 50 Boxes Per Case: 10 Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>