Nosler Trophy Grade 300 RUM 165gr Partition - 20 Rounds

The Nosler Trophy Grade 300 RUM 165gr Partition is purpose-built hunting ammunition that pairs Nosler's legendary Partition bullet with premium brass for reliable, ethical terminal performance on medium to large game. Since 1948, the Partition has been the standard by which hunting bullets are measured—and for good reason. This load chambers 165-grain Partition bullets in the full-throttle 300 Remington Ultra Magnum, a cartridge known for driving heavy projectiles at magnum velocities for extended-range capability and hard-hitting energy delivery.

The Partition's two-stage construction is where the magic happens. The bullet's forward core mushrooms on impact for rapid, violent expansion that anchors game quickly. Simultaneously, the partition—an internal wall that Nosler pioneered decades ago—controls that expansion and preserves the rear core. This design retains more than two-thirds of the bullet's original weight, ensuring deep penetration through heavy bone and vital organs without jacket separation or core loss. It's the kind of performance that turns questionable shots into clean kills and gives you confidence in low-light or long-distance situations.

These rounds are assembled in Nosler's own premium brass, which means tighter quality control and better case longevity for handloaders and shooters who reload their own ammunition. Trophy Grade ammunition is the middle ground between factory-fresh accuracy and hand-tailored precision—reliable, consistent, and backed by nearly eight decades of field-proven terminal design.

Key Features

• Nosler Partition bullet with dual-core design for controlled expansion and deep penetration
• 165-grain Spitzer profile optimized for 300 RUM velocity and energy retention
• Partition design retains two-thirds original bullet weight for maximum tissue damage and bone-breaking power
• Nosler premium brass for consistent chamber fit and reloadability
• 20-round box—standard for Trophy Grade ammunition

Specifications

Frequently Asked Questions

What game is the 300 RUM 165gr Partition suitable for?

The 165-grain Partition in 300 RUM is designed for medium to large game hunting, including elk, moose, and similar-sized animals. The Partition's controlled expansion and deep penetration make it well-suited for animals requiring reliable, bone-breaking performance at hunting distances.

Will I be able to reload this ammunition?

Yes. Nosler Trophy Grade ammunition is loaded in Nosler premium brass, which is durable, consistent, and suitable for reloading after firing.

How does the Partition bullet differ from other hunting bullets?

The Partition features a partition wall inside the bullet that separates the front and rear cores. The front core expands for immediate tissue damage; the partition controls that expansion and keeps the rear core intact, which retains more than two-thirds of the original bullet weight for penetration. This dual-stage design has been the foundation of Nosler's reputation since 1948.

What is included in the box?

Each box contains 20 loaded rounds of Nosler Trophy Grade 300 RUM ammunition with 165-grain Partition bullets.