Peterson Cartridge 10.36X77Mm Brass 50/Box

The Peterson Cartridge 10.36x77mm brass is a precision rifle cartridge designed for shooters and reloaders working with specialized, long-range applications. This 50-round box of unprimed cases gives you the foundation for building accurate ammunition on your own timeline. Based on a modified .505 Gibbs case necked down to .408 caliber, the 10.36x77mm delivers the kind of ballistic performance that demands quality brass—and Peterson Cartridge delivers exactly that.

Each case comes annealed and fully cleaned at the factory, so you're starting with brass that's ready to resize, prime, and load without extra prep work. The uniform quality control means less sorting and fewer variables when you're chasing precision at distance. Whether you're developing loads for a specialized bolt-action rifle or exploring what this cartridge can do at extreme range, Peterson's attention to case consistency matters when every tenth of an inch counts.

The brass arrives in a protective plastic ammo box—sturdy enough to keep cases safe in transit and practical for organizing your reloading bench or storing loaded ammunition once you've finished assembling your rounds. If you're serious about long-range rifle work and comfortable with the reloading process, this is the kind of component that rewards attention to detail.

Key Features

• 50 pieces of annealed, factory-cleaned rifle brass per box
• Based on modified .505 Gibbs case design, necked down to .408 caliber
• Uniform case preparation reduces sorting and improves load consistency
• Shipped in protective plastic ammo box for safe transport and convenient storage
• Ready to resize, prime, and load without additional annealing

Specifications

Frequently Asked Questions

What is the 10.36x77mm cartridge used for?

The 10.36x77mm is a specialized, long-range rifle cartridge designed for precision shooting applications. It's based on a modified .505 Gibbs case necked down to .408 caliber, engineered to deliver consistent performance at extended distances.

Do these cases come primed and loaded?

No—these are unprimed brass cases only. You'll need to resize, prime, and load them yourself as part of the handloading process.

Are the cases ready to load straight from the box?

Yes. Peterson Cartridge anneals and cleans all brass before packing, so the cases are ready for your reloading equipment without additional prep work.

What's included in the box besides the brass?

Each box contains 50 cases and a protective plastic ammo box designed for safe shipping and convenient storage of both brass and finished ammunition.