Peterson Cartridge 300 WSM Brass Rifle Casings - 50/Box

The Peterson Cartridge 300 WSM brass rifle casings are American-made, match-grade empty cases designed for handloaders working with the .300 Winchester Short Magnum. Shipped in a 50-count box with 10 boxes per case (50/10 configuration), these unprimed casings feature a large rifle primer pocket and the tight tolerances Peterson is known for among precision reloaders.

The 300 WSM is a high-performance, beltless .30-caliber magnum that delivers magnum-level performance from a short-action rifle. It is a popular choice for hunting elk, moose, and other large game where deep penetration and high retained energy matter. The beltless case design simplifies reloading, and Peterson's precision-drawn brass takes full advantage of that with uniform case dimensions and consistent internal capacity shot after shot.

Each casing measures 2.1" in length and is engineered for repeatable accuracy across multiple firing cycles. Peterson's manufacturing process emphasizes concentricity, weight consistency, and case wall uniformity, helping handloaders produce predictable pressure and consistent velocity whether you are loading for hunting, long-range practice, or competition.

Manufactured in the USA by Peterson Cartridge, these unprimed brass cases ship in a 50-round box and are ready for your preferred primer, powder, and bullet combination.