Peterson Cartridge Unprimed Rifle Brass Features Peterson Cartridge builds its Unprimed Rifle Brass around a match-grade standard that is maintained throughout the entire manufacturing process from small batch production lines to a dedicated quality control department. That consistency matters most to precision shooters since uniform case dimensions and wall thickness directly influence how consistently a load performs downrange. Chambered for the 6.5-300 Wby. Mag cartridge this brass is designed to accept large rifle primers giving reloaders a dependable foundation for building precision ammunition. Each case is fully reloadable allowing shooters to reuse their investment across multiple reloading cycles rather than treating brass as a single-use component. Peterson s approach to brass production emphasizes that match-grade consistency should carry all the way from the factory to the shooter s bench and ultimately to the target. This level of attention is particularly valuable for a demanding magnum cartridge like the 6.5-300 Wby. Mag where case uniformity plays a significant role in extending both accuracy and case life under high pressure and velocity. Sold new and unprimed this brass gives reloaders full control over their load development process. Peterson Cartridge Unprimed Rifle Brass is available for sale at GrabAGun for reloaders who want dependable match-grade cases for their 6.5-300 Wby. Mag rifle. Peterson Cartridge Unprimed Rifle Brass Specifications Manufacturer: Peterson Cartridge Caliber: 6.5-300 WBY Primer Size: Large Rifle Count: 50-Count Reloadable: Yes Available At: GrabAGun