Peterson Cartridge Unprimed Brass, .338 Win Mag Long, 50-Count

Peterson Cartridge Unprimed Brass in .338 Winchester Magnum Long (Peterson part no. 40086-R) is built for handloaders reloading this hard-hitting long-range magnum in its extended-length configuration. Peterson holds every case to a match-grade standard through small-batch production and quality control, which keeps case capacity and wall thickness consistent from piece to piece. That consistency matters for handloaders working up heavy magnum loads, where uniform brass directly affects pressure consistency and accuracy. Sold unprimed and packaged 50 cases per pack, this brass is ready for a reloader’s own priming and load development.

Key Specifications

• Chambered for .338 Winchester Magnum Long, the extended-length variant of this heavy magnum cartridge.
• Manufactured to a match-grade standard for consistent case dimensions.
• Sold unprimed, giving handloaders full control over primer selection.
• Packaged 50 cases per pack.
• Produced with consistent wall thickness, helping keep pressures uniform across heavy magnum loads.

Frequently Asked Questions

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

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

Buy the Peterson Cartridge Unprimed Brass, .338 Win Mag Long, 50-Count

Build consistent heavy-magnum loads with brass from Peterson Cartridge. Ships fast from our Lubbock, Texas gun shop, and browse our full reloading equipment lineup.