Nosler Partition 25 Cal 115gr Spitzer Bullets Box 50
S16837
- Nosler Partition: the original dual-core hunting bullet, trusted by stalkers and handloaders since 1948
- .25 calibre, 115 grain, spitzer profile
- Bullet diameter 0.257in, bullet length 1.145in
- Sectional density 0.249, ballistic coefficient 0.389
- Dual-core partition design: front core expands for a wide wound channel, rear core retains weight for deep penetration
- Special crimp reinforces the rear core against deformation under heavy magnum loads
- Box of 50 unprimed component bullets for handloading — not loaded ammunition
The Nosler Partition is the bullet that built the company, and it remains one of the most trusted big-game projectiles for handloaders. This .25 calibre 115-grain spitzer is a dual-core component bullet: a fully tapered jacket ruptures instantly at the thin mouth while a gradual thickening along the shank controls expansion, curling the jacket uniformly outward at both high and low impact velocities. Nosler's integral partition wall physically separates the two lead cores, so the front section mushrooms to deliver a wide wound channel while the rear core stays locked behind the partition, retaining more than half the bullet's original weight for deep penetration. A special crimp secures the rear core, adding resistance to deformation under the pressure generated by hot-loaded magnum rounds. With a sectional density of 0.249 and a ballistic coefficient of 0.389, the heavier 115-grain option gives quarter-bore handloaders extra weight for larger deer species. Supplied unprimed, 50 to a box, for handloaders building their own .25 calibre ammunition. This is not loaded ammunition.
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