Hornady 300 Rem Ultra Mag Brass - 20ct

Hornady 300 Rem Ultra Mag Brass

The Hornady 300 Rem Ultra Mag Brass is a high-quality cartridge case designed for hand-loaders using rifles chambered in .300 Remington Ultra Magnum. Manufactured to Hornady’s exacting quality standards, each case features precision-drawn, premium-quality brass that delivers consistent wall thickness, exact internal volume, and uniform primer pockets—ensuring reliable ignition, consistent pressures, and excellent accuracy when reloaded to your desired specifications.

CNC-formed with tight dimensional tolerances, the 300 Rem Ultra Mag Brass offers dependable performance in both bolt-action and single-shot platforms designed for magnum pressures. Its durable case construction withstands multiple reload cycles with proper annealing and trim maintenance, making the Hornady 300 Rem Ultra Mag Brass a cost-effective option for shooters who demand repeatable precision and consistent ballistic performance.

The case-neck geometry and headspacing consistency of the Hornady 300 Rem Ultra Mag Brass contribute to smooth chambering and accurate bolt lock-up. These characteristics reduce runout potential and support accurate bullet alignment—essential for achieving sub‑MOA groups with precision projectiles. The brass’s robustness also tolerates magnum-level pressures without case head separation or excessive bulging when sized appropriately.

Reloaders benefit from the Hornady 300 Rem Ultra Mag Brass’s polished interior surfaces, which promote smooth bullet seating and reduce crimping-related inconsistencies. The primer pockets are properly sized for small- or large-magnum primers (as specified), ensuring uniform ignition and enhanced pressure control—a critical factor for long-range bullet performance.

The Hornady 300 Rem Ultra Mag Brass supports a wide range of handloading applications, from varmint rounds with lightweight bullets to heavy, high-BC projectiles used in long-range hunting and target shooting. Users can develop loads tailored to their rifles, including match groups or tactical marksmanship, by pairing the brass with quality powders, primers, and bullets of varying weights.

Durability and reusability are top priorities for precision reloaders. The Hornady 300 Rem Ultra Mag Brass exhibits reduced spring-back and consistent neck tension through multiple load cycles when annealed and trimmed as needed. This longevity ensures sustained ballistic consistency and reliability across dozens of reloads.

Whether you’re building a custom long-range load or tuning a hunting setup, the Hornady 300 Rem Ultra Mag Brass provides the foundational component needed for quality ammunition. Its combination of dimensional accuracy, durability, and reloadability makes it a trusted choice for serious hand-loaders using the .300 Remington Ultra Magnum platform.

The Hornady 300 Rem Ultra Mag Brass is a premium case option that elevates hand-loading performance. Its careful manufacturing, compatibility with magnum rifles, and ability to support precise and consistent reloads make it a central component in any high-performance .300 RUM ammunition build.