The Lapua .300 Winchester Magnum Brass is built for reloaders who demand precision, durability, and consistency in a proven long-range cartridge. The .300 Win Mag has earned its reputation worldwide as a powerful and versatile magnum, trusted by hunters, competitive shooters, and professional users since its introduction in the early 1960s.

Lapua brings its industry-leading manufacturing standards to this cartridge, delivering exceptional concentricity, uniform wall thickness, and extended case life. These qualities translate into consistent neck tension, reliable ignition, and repeatable accuracy—whether you’re building loads for long-range steel or open-country hunting.

The .300 Win Mag supports a wide range of bullet weights, making it highly adaptable for everything from target shooting to mid- and large-game hunting. Lapua’s brass provides the reliable foundation needed to take full advantage of the cartridge’s long-distance capability and energy retention.

This variant features a Large Rifle Primer (LRP) pocket and comes packaged in Lapua’s protective 100-count cardboard case box, designed to maintain case integrity during shipping and storage.

For reloaders who refuse to compromise, Lapua .300 Winchester Magnum brass sets the benchmark.

Key Features

• Large Rifle Primer (LRP) pocket

• Premium Lapua manufacturing standards

• Excellent case life and dimensional uniformity

• Ideal for long-range precision shooting

• Suitable for hunting and competition applications

• Packaged in a 100-count protective box