Hornady Unprimed Brass Cases .300 RUM 20/Box

The Hornady Unprimed Brass Cases in .300 Remington Ultra Magnum offer reloaders a high-quality foundation for building precision .300 RUM ammunition. Manufactured by Hornady, these unprimed rifle brass cases are engineered for the demanding pressures and velocities of the .300 RUM cartridge and arrive ready for the full reloading workflow.

Hornady brass is produced with careful attention to uniformity in wall thickness, case weight, and internal capacity. This consistency translates directly to the reloading bench: predictable case sizing, uniform neck tension from lot to lot, and reloads that hold the same point of aim as the case is reworked over multiple firing cycles.

Each box contains 20 unprimed cases in brass, sold as a single unit. The cases require standard preparation - resize, trim to length, deburr and chamfer as needed, prime, charge with powder, and seat a bullet - before they become loaded ammunition. The .300 RUM is a proven long-range and dangerous-game cartridge, and these cases give handloaders the components to assemble ammunition tailored to specific shooting applications, from precision rifle matches to elk and moose hunting.

Whether you are stocking the reloading bench for a new .300 RUM build or replenishing components for a favorite handload, this 20-count box of Hornady brass delivers the consistency serious reloaders expect from one of the most trusted names in reloading components.