Last reviewed: 2026-04-17 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The 300 WSM brass from Hornady starts with factory-new, unprimed cases measured for consistent wall concentricity and pressure-tested for uniform expansion. The 300 Winchester Short Magnum is a short-action magnum cartridge that delivers velocities competitive with the full-length 300 Win Mag while running in lighter, shorter bolt-action platforms. Hornady manufactures each case to the same dimensional tolerances used across their loaded ammunition lines, which translates to repeatable seating depth, consistent powder charges, and tighter velocity spreads at your reloading bench.
Built for the Bench
Hornady anneals the case necks during manufacturing to control work-hardening and extends case life across multiple firings. Each piece is hand-inspected before boxing. New brass may show minor mouth dents from the final tumbling wash — these clear on the first firing and do not affect case integrity or longevity. The unprimed condition lets you select your primer type and brand to match your specific load recipe.
Specs at a Glance
| Spec | Value |
|---|---|
| Cartridge | 300 Winchester Short Magnum (WSM) |
| Finish | Brass |
| Condition | New |
| Primed | No |
| Quantity | 50 pieces per box |
| Country of origin | United States |
| Manufacturer | Hornady |
Each 50-count box ships ready for your reloading press. Browse more calibers in the reloading brass category.
Safe Handling & Compliance
This product is an unprimed brass case — it is not loaded ammunition. Handle with standard reloading safety practices: always verify case dimensions with a headspace gauge before loading, follow published load data from recognized sources, and never exceed maximum charges listed in current reloading manuals.
- Review the 4 rules of firearms safety before handling any firearm or component.
- Verify current federal, state, and local laws regarding possession and use of reloading components in your jurisdiction.
- California Proposition 65: this product can expose you to lead, known to the State of California to cause cancer and reproductive harm. Store brass in a cool, dry location away from heat sources and out of reach of unauthorized users.
Reviews
There are no reviews yet.