Peterson Cartridge Unprimed Brass, 6mm ARC, 50-Count

Peterson Cartridge Unprimed Brass in 6mm ARC (Peterson part no. 40074-R) gives handloaders match-grade rifle cases for one of the newest and most talked-about short-action precision cartridges on the market. Peterson built its name on small-batch production runs and strict quality control, producing brass that holds tight, consistent dimensions from case to case. That consistency matters most in a cartridge like 6mm ARC, where every reloader is chasing repeatable neck tension and case capacity for long-range accuracy. This unprimed brass is sold in a 50-count pack, ready for a reloader to prime, charge, and load to their own specifications.

Key Specifications

• Chambered for 6mm ARC, a short-action precision cartridge built for long-range accuracy.
• Sold unprimed, giving handloaders full control over primer selection.
• Case length measures 5.7", a confirmed dimension for this cartridge’s brass.
• Produced through small-batch production runs, a process Peterson uses to hold tight tolerances.
• Passes through strict quality control at every stage, from raw material to final packaging.
• Built with consistent wall thickness, supporting uniform case capacity from piece to piece.
• Sized for a short-action precision rifle platform, matching 6mm ARC’s compact case design.
• Supports repeatable neck tension, holding bullets consistently from case to case.
• Packaged 50 cases per pack, sized for a handloader’s regular reloading sessions.

Frequently Asked Questions

Is this brass primed or unprimed? It’s sold unprimed, so you can select your own primers.

How many cases come in a pack? Each pack contains 50 cases.

Buy the Peterson Cartridge Unprimed Brass, 6mm ARC, 50-Count

Build your 6mm ARC loads on a consistent foundation from Peterson Cartridge. Ships fast from our Lubbock, Texas gun shop, and browse our full reloading supplies selection.