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The .257 Weatherby Magnum pairs one of Roy Weatherby's most respected cartridges with modern copper bullet technology. This factory load delivers 92-grain Hammer Custom projectiles from solid copper construction, each weighed and micrometer-measured for consistency you can count on. The hollow point design initiates expansion on impact while shedding petals immediately, allowing the bullet base to continue forward and create an optimal wound channel.
Hammer bullets are manufactured on CNC lathes using a unique solid copper blend designed specifically for terminal performance. The 92-grain offering keeps velocity high at 3700 FPS with 2796 foot-pounds of muzzle energy, making this load suitable for medium game at extended distances. Because copper is lighter than traditional lead-core bullets, the 92-grain weight carries an excellent ballistic coefficient of .322 while remaining lighter than comparable lead alternatives. This combination gives you a flatter trajectory typical of the .257 Weatherby platform.
Weathery Select Plus ammunition uses new brass cases loaded to exacting standards. Every round receives the same precision treatment during manufacturing, which translates to consistent velocity and point-of-impact downrange. The .257 Weatherby is known for inherent accuracy, and Weatherby guarantees sub-MOA performance with their rifles, meaning you get ammunition that supports that standard. Whether you're working up handloads or comparing factory offerings, this load provides a reference point for consistency.
The .257 Weatherby's flat trajectory and manageable recoil make it versatile for various hunting situations. The 92-grain Hammer Custom keeps velocity high enough to deliver energy at longer ranges while the mono-copper construction minimizes meat damage compared to traditional lead bullets. You get 20 rounds per box, allowing you to develop accurate loads at the range or maintain a reliable hunting supply.
Hammer Custom bullets are machined from solid copper and designed to shed petals on impact while the bullet base continues forward, creating a controlled wound channel. Each bullet is individually weighed and micrometer-measured during manufacturing, which delivers consistency that's difficult to achieve with traditional lead-core construction. This precision manufacturing approach reduces velocity variation between rounds.
Yes. The 92-grain loading delivers excellent velocity and energy retention at typical hunting distances for medium game like deer and antelope. Feedback from field use shows the Hammer Custom bullets perform effectively on these game sizes, though shot placement remains the primary consideration for any hunting situation. The flat trajectory of the .257 Weatherby helps facilitate accurate shot placement at extended ranges.
Factory Weatherby ammunition provides consistent velocity and pressure from every round, eliminating the variables that come with handloading. This load delivers 3700 FPS with the 92-grain Hammer Custom, which matches well against quality handloads using similar powders and bullets. For those without reloading equipment or time, this factory ammunition provides production-quality consistency at competitive prices.
The .257 Weatherby achieves roughly 300-400 FPS more velocity than the .25-06 Remington with comparable bullet weights, translating to flatter trajectory and better energy retention at distance. It offers this performance with mild recoil compared to larger magnum cartridges, making it accessible for extended shooting sessions or follow-up shots if needed.
| Caliber/Gauge | .257 Weatherby Magnum |
|---|---|
| Case Material | Brass |
| Cost per Round | 4.80 |
| Grains | 92 gr |
| Manufacturer | |
| Manufacturer Part Number | M25792HCB |
| Units per Box | 20 |
| UPC | 747115451647 |
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