NOSLER 16318 PARTITION 25 CAL 115 GRAIN SPITZER 50 CNT

Nosler Partition spitzer component bullets in 25 caliber .257 diameter at 115 grains (16318) are a premium big game hunting projectile built for reloaders who want the proven dual-core construction and controlled expansion that has set the standard for hunting bullets since 1948. These 25 cal big game reloading bullets for cartridges like the .25-06 Remington and .257 Roberts come 50 per box and deliver reliable expansion and deep penetration on any game at virtually all impact velocities.

Key Features

• Manufacturer part number: 16318
• Caliber: 25 cal, .257 diameter
• Bullet weight: 115 grains
• Bullet type: Partition spitzer, flat base
• G1 ballistic coefficient: 0.389
• Sectional density: 0.249
• Overall length: 1.145 inches
• Jacket material: Fully tapered copper-alloy
• Core material: Special lead-alloy dual-core
• Cannelure: No
• Count per box: 50
• Application: Big game hunting

Special Features

• The dual-core construction separates the bullet into two distinct lead-alloy sections divided by an integral copper partition, allowing the front core to expand aggressively on impact while the sealed rear core drives deep penetration regardless of velocity.
• The fully tapered copper-alloy jacket ruptures instantly at the thin jacket mouth, then thickens progressively toward the base to control expansion and curl the jacket uniformly outward at both high and low impact velocities.
• The integral partition supports the expanded mushroom and locks the rear core in place, retaining more than two-thirds of the original bullet weight for reliable deep penetration on tough game animals.
• Special crimp locks add structural strength to the bullet body, resisting deformation under the elevated pressures generated by magnum cartridges without affecting terminal performance.

Practical Benefits

• These bullets are compatible with .257 caliber cartridges including the .25-06 Remington, .257 Roberts, .257 Weatherby Magnum, and .250 Savage, giving you one proven component across multiple .25 cal hunting platforms.
• The 115-grain weight delivers an exceptional sectional density of 0.249, producing the penetration depth needed for clean, ethical kills on deer, antelope, and similar medium game at all field distances.
• The Partition design performs consistently across the full velocity spectrum from close-range brush shots to long-range open-country opportunities, eliminating the need to swap components as hunting conditions change.
• If you reload for a .25 caliber rifle and want a hunting bullet that has earned its reputation across decades of field use on medium to large game, the Nosler Partition (16318) gives your handloads the terminal reliability and weight retention your hunting setup deserves.

The Nosler Partition 25 Cal .257 115 Grain Spitzer (16318) is a confidence-building choice for the serious big game hunter and handloader seeking a proven platform in the .25 caliber hunting bullet category.