Nosler 30 Cal 170gr RN Partition (50ct)

Nosler 30 Cal 170gr RN Partition (50ct)

The Nosler 30 Cal 170gr RN Partition (50ct) is a high-performance bullet component designed for handloaders demanding deep penetration, controlled expansion, and dependable accuracy from their .30-caliber rifles. Featuring Nosler’s classic Partition design with a dual-core structure and jacket partition, this 170-grain round-nose bullet (RN) ensures uniform expansion in soft tissue while the rear core retains weight for deep penetration. Each box contains fifty precision-manufactured projectiles, polished and ready for precise seating.

Constructed at .308″ diameter with a round-nose design and boat-tail profile, the 30 Cal 170gr RN Partition offers excellent ballistic coefficient and consistent stabilization. The front softer core expands reliably, while the harder rear core maintains mass through tough tissue and bone—ideal for cartridges such as .30-06 Springfield, .300 Winchester Magnum, .308 Winchester, and .300 WSM. Its round-nose geometry aids feeding in tubular magazines and improves terminal behavior in deep penetration scenarios.

Key technical specifications include a ballistic coefficient (G1) of approximately 0.410 and a sectional density (SD) of around 0.243. With an overall bullet length near 1.350″, it’s optimized for barrels with 1:10″ twist rates or faster. The jacket’s partitioned core supports 60–70% weight retention post-impact, delivering consistent, ethical terminal performance and deep wound channels.

In field use, the 30 Cal 170gr RN Partition delivers clean, straight-line penetration and controlled expansion—ensuring reliable energy transfer on big game such as elk, moose, and deer. Hunters report consistent terminal performance and excellent feed reliability, even in large-capacity rifles and robust big-game scenarios.

This is strictly a bullet component—not factory-loaded ammunition. Handloaders should reference Nosler’s official load data and reputable reloading manuals. Recommended powders include Hodgdon H‑4831SC, IMR 4064, or Reloder 15 for achieving balanced pressure, velocity, and accuracy with this 170-grain bullet. Correct case preparation, neck tension, seating depth, and overall length are essential to maximize reliability and precision in your .30-caliber platform.

Combining the proven Nosler Partition dual-core structure, round-nose terminal efficiency, and precision boat-tail aerodynamics, the 30 Cal 170gr RN Partition bullet component is a top-tier option for serious hunters and long-range shooters seeking ethical performance, deep penetration, and accuracy in .30-caliber handloads.