Peterson Cartridge 7mm PRC Unprimed Match-Grade Brass, 50-Count Box

The Peterson Cartridge 7mm PRC Unprimed Match-Grade Brass (Peterson part no. 40073-R) gives handloaders a proven foundation for building precision 7mm PRC ammunition. Peterson Cartridge built its reputation on match-grade rifle casings, and this box carries that same standard into one of the newest and most capable magnum-class cartridges on the market. The 7mm PRC was designed to bridge the gap between 6.5 PRC and .300 PRC, launching long, heavy-for-caliber bullets from 160 to 180 grains with flatter trajectories and less recoil than larger magnums. Because these cases ship unprimed, handloaders control every step of case prep and load development starting from the very first firing. It’s a natural fit for long-range precision shooters, hunters chasing extended-range performance, and competitors who need casings that hold tight tolerances load after load.

Key Specifications

• Chambered for the 7mm PRC cartridge, a modern magnum-class round built for long-range precision.
• Cases ship unprimed, giving handloaders full control over primer selection and seating depth.
• Manufactured as match-grade brass, held to consistent tolerances through every stage of production.
• Produced on Peterson’s proprietary case-forming line, built specifically for tight dimensional consistency.
• Sized to feed bullets from 160 to 180 grains, the heavy-for-caliber weights the 7mm PRC was designed around.
• Fits a standard long-action receiver, so no proprietary action length is required.
• Positioned to deliver more consistent velocities than many comparable magnum cartridges.
• Built for longer barrel life relative to larger-capacity magnum alternatives.
• Packaged in a 50-count box, with cases also available boxed ten to a case for bulk reloading.
• Brass casings are made in the U.S.A., produced start to finish at Peterson’s domestic facility.

Frequently Asked Questions

Is this brass primed or unprimed? It ships unprimed, so you’ll seat your own primers as part of your load workup.

What bullet weights work best in 7mm PRC? The cartridge is built around heavy-for-caliber bullets in the 160 to 180 grain range, which is where it delivers its long-range advantage.

Will this brass fit my rifle? Yes, as long as your rifle is chambered in 7mm PRC and built on a standard long action, these cases will fit and feed normally.

Buy the Peterson Cartridge 7mm PRC Unprimed Match-Grade Brass

Serious handloaders know that consistent brass is the foundation of a repeatable load, and this is exactly why precision shooters keep coming back to Peterson Cartridge cases. Whether you’re developing a long-range hunting load or chasing smaller groups at the range, starting with match-grade, unprimed 7mm PRC brass gives you a repeatable baseline to build from. Order it from our reloading supplies lineup for fast, direct shipping to your door.