Nosler Partition 270 Cal 140 Grain Spitzer Bullets - Box of 50

The Nosler Partition 270 caliber 140 grain spitzer bullet has earned its reputation as a workhorse hunting round for over 75 years. Built on Nosler's dual-core design with an integral partition, these .277" bullets deliver the controlled expansion and weight retention that serious hunters depend on—whether you're handloading for deer, elk, or medium-game at distance. A box of 50 gives you plenty of ammo for load development and field use.

What sets the Partition apart is its engineering philosophy: controlled chaos. The front lead core expands aggressively to create a devastating wound channel and shock effect; the rear core, protected by the internal partition, stays intact to drive deep and hold onto 65% or more of the original weight. That dual-personality approach—sudden expansion up front, deep penetration in back—is why Partition bullets became the benchmark for hunting ammunition.

The tapered copper-alloy jacket is thin at the mouth for instant rupture on impact, then gradually thickens toward the base to manage expansion at whatever velocity your particular rifle produces. The special lead-alloy formulation works across a wide speed range, so whether you're loading hot or mild, you get consistent mushrooming and reliable performance. And the integral crimp locks add structural integrity under the pressures of magnum loads, so reloaders can push hard without worrying about jacket separation.

If you're building hunting ammo in 270 Win, 270 WSM, or similar cartridges, the Partition is a proven starting point. It's not the flashiest bullet on the shelf, but it's the one that consistently puts game down.

Key Features

• Dual-core design: aggressive front expansion paired with rear-core weight retention for bone-crushing shock and deep penetration
• Integral partition structure protects the rear lead core and retains over 65% of original weight
• Tapered copper-alloy jacket ruptures instantly at thin mouth, with gradual thickening for controlled expansion at all velocities
• Special lead-alloy formulation for consistent mushrooming from moderate to magnum velocities
• Integral crimp locks for structural strength under heavy pressure loads
• Flat base design for reliable feeding and seating

Specifications

Frequently Asked Questions

What rifles and cartridges are these 270 140-grain Partition bullets for?

These .277" bullets are designed for 270 Winchester, 270 WSM, and similar 270 caliber cartridges. Check your rifle's chamber and your reloading manual for the correct cartridge designation before loading.

How much weight does a Partition bullet retain after impact?

The Nosler Partition is designed to retain more than two-thirds (approximately 65%+) of the original bullet weight, with the rear core protected by the internal partition driving deep for penetration after the front core has expanded.

Are these bullets suitable for magnum loads?

Yes. The integral crimp locks on Partition bullets add structural strength to resist deformation under heavy magnum pressures, and the dual-core design delivers consistent expansion across a wide velocity range, making them effective in both standard and magnum 270 loads.

What's included in a box of 50?

Each box contains 50 individually packaged Nosler Partition 270 caliber 140 grain spitzer bullets with flat bases, ready for handloading.