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The .257 Weatherby Magnum is a .257 caliber (6.53 mm) belted bottlenecked cartridge. It is one of the original standard length magnums developed by shortening the .375 H&H Magnum case to approx. 2.5 in (64 mm).
A magnum cartridge is a firearm cartridge with a larger case size than, or derived from, a similar cartridge of the same projectile caliber and case shoulder shape. [ clarification needed ] The term derives from the .357 Magnum , the original revolver cartridge with this designation.
The Wapiti is a more complicated wildcat based on the .300 H&H Magnum being necked-down, trimmed, and then fire-formed. The large case is well-suited to heavy bullets. Performance with a 160-grain (10 g) bullet is approximately 3,225 ft/s (983 m/s). [21]
[9] [10] Weatherby has designed almost all of its cartridges with belts; curved, double-radius shoulders; and considerable freebore. The .224 Weatherby Magnum, introduced in 1963, was the first and, for more than 50 years, the only Weatherby cartridge to have an angled shoulder but included the company's other distinctive features. [11]
The 6.5mm Remington Magnum is based on the .350 Remington Magnum necked down to accept a .264 caliber (6.71 mm) bullet. It was one of the original short, fat magnum cartridges to be put into production. The short, fat cartridge design is known to promote efficient powder burning characteristics. The SAAMI recommends a 6 groove barrel with a 1:9 ...
The .264 Winchester Magnum main competition comes from the various 7mm cartridges such as the 7mm Remington Magnum, 7mm Weatherby Magnum, the .270 Winchester Short Magnum, .270 Weatherby Magnum, 6.5mm Remington Magnum and the .257 Weatherby Magnum cartridges in North America and the cartridges such as the 6.5×68mm in Europe. Due to the over ...
Winchester Super Short Magnum, or WSSM is a line of rebated bottlenecked centerfire short magnum cartridges introduced by the U.S. Repeating Arms Company (Winchester Inc). [1] It is a further development of the Winchester Short Magnum concept utilizing smaller bullets, but of a still higher velocity.
The .30-378 Weatherby Magnum is a .30 caliber, belted, bottle-necked rifle cartridge. [2] The cartridge was developed in response to a US Army military contract in 1959. While still unreleased to the public, the cartridge went on to set world records for accuracy including the first ten 10X in 1,000 yards (910 m) benchrest shooting. [ 3 ]