Peterson Cartridge Unprimed Rifle Brass Features Peterson Cartridge Unprimed Rifle Brass is reloadable .300 Win Mag brass manufactured to the company s Match-Grade standard meaning consistency in wall thickness case length and primer pocket dimensions is held across the entire production run. That consistency translates directly into more uniform case capacity and more consistent velocities from one handload to the next which is exactly what long-range and precision rifle shooters are chasing when they choose to reload their own ammunition. Each case is sized to accept a large rifle primer and ships unprimed giving the handloader full control over primer selection powder charge and seating depth. Peterson s quality control process follows the brass from small batch production through final inspection before it ever reaches the reloading bench. Because this brass is reloadable it can be fired resized and reloaded multiple times making it a cost-effective foundation for shooters who load their own .300 Win Mag ammunition in volume. Handloaders building precision loads for hunting or long-range competition benefit from the case-to-case uniformity Peterson engineers into every batch rather than the variability found in mixed-headstamp range brass. This 50-count box gives a reloader enough brass to establish a load and begin working up a consistent batch without needing to supplement from other sources. Peterson Cartridge Unprimed Rifle Brass in .300 Win Mag is available for sale at GrabAGun for reloaders seeking match-grade consistency in their own ammunition. Peterson Cartridge Unprimed Rifle Brass Specifications Manufacturer: Peterson Cartridge Model: Unprimed Rifle Brass Caliber: .300 Win Mag Material: Brass Primer Size Type: Large Rifle Reloadable Case: Yes Rounds Per Box: 50 Available At: GrabAGun