Peterson Cartridge 300 Weatherby Magnum Unprimed Rifle Brass 50ct

Description

The 300 Weatherby Magnum has earned its reputation with long-range big game hunters, and that kind of performance starts with quality brass. Peterson Cartridge builds these unprimed cases to a match-grade standard, meaning the consistency you expect from the bench carries all the way through to the target. The .300 Weatherby Magnum traces back to Roy Weatherby's work in the 1940s, built around his signature double radius shoulder design, and Peterson applied the tooling knowledge it developed on belted magnums to produce a case that honors that heritage with modern precision.

Why Reloaders Reach for Peterson 300 Weatherby Brass

What sets this brass apart is the attention paid at every step. Every case runs through a multi-stage inspection that covers dimensional measurement, weight verification, hardness testing, wall thickness, primer pocket checks, internal volume, and neck concentricity. The result is brass that shows up uniform and ready to work, with smooth, chamfered case mouths and clean flash holes that often need little to no prep. Reloaders consistently note that primer pockets stay snug through many firings, and plenty of folks report well over ten reloads on their Peterson cases when loads are kept sensible.

Getting the Most From Your 300 Weatherby Magnum Handloads

One thing worth knowing: Peterson brass tends to run on the heavier, tougher side, which can mean slightly less internal case capacity than some competing brands. That's not a knock, it just means you'll want to work up your loads fresh rather than carrying over a recipe from different brass. Do that, and this case rewards you with repeatable ignition, reduced runout, and the kind of accuracy potential that keeps serious long-range shooters coming back.

This is American-made, family-owned manufacturing aimed squarely at the handloader who cares about the details. Whether you're building hunting rounds for that next elk trip or chasing tiny groups at distance, this is a solid foundation to build your 300 Weatherby loads on.