This Weatherby .257 Weatherby Magnum 92gr Hammer Custom load comes in a 20-round box (Weatherby part no. M25792HCB). Weatherby loads a Hammer Custom bullet in its .257 Weatherby Magnum, the cartridge Roy Weatherby introduced in the 1940s and counted as a favorite. The 92-grain Hammer is turned on a CNC lathe from a solid copper blend, with each bullet weighed and measured as it is made. At a listed 3700 fps, it is the fastest .257 offering on Weatherby’s page.

Key Specifications

• The chambering is .257 Weatherby Magnum, so this load is only for rifles chambered for that cartridge.
• Bullet weight is 92 grains, the weight Weatherby lists for this Hammer Custom load.
• The bullet is a Hammer Custom hollow point, which Weatherby says begins expanding on impact and sheds petals immediately.
• The bullet is made from a solid copper blend, which Hammer designs for maximum terminal performance.
• Each bullet is CNC turned, weighed and micrometer measured, which Weatherby cites as the source of its consistency.
• The G1 ballistic coefficient is .322, the figure Weatherby publishes for this 92-grain bullet.
• Muzzle velocity is listed at 3700 fps, with 3357 fps remaining at 100 yards in Weatherby’s table.
• Muzzle energy is listed at 2796 ft-lbs, falling to 2302 ft-lbs at 100 yards.
• Maximum case length is 2.549 inches, the dimension Weatherby publishes for the .257 Weatherby Magnum.
• Each box holds 20 rounds, the quantity you receive with this listing.

Frequently Asked Questions

What is a Hammer Custom bullet made of? Weatherby describes Hammer bullets as turned on a CNC lathe from a unique solid copper blend, with a hollow point that sheds petals on impact.

How fast is this .257 Weatherby Magnum load? Weatherby lists 3700 fps and 2796 ft-lbs at the muzzle.

How many rounds come in a box? Each box holds 20 rounds.

Buy the Weatherby .257 Weatherby Magnum 92gr Hammer Custom Rifle Ammunition, 20-Round Box

Hunters and long-range shooters who run Weatherby rifles will find this load a natural fit. Our Lubbock, Texas gun shop ships it fast and insured, and our rifle ammunition page has more to choose from.