.460 S&W Magnum
|.460 S&W Magnum|
|Place of origin||United States|
|Designer||Hornady / Smith & Wesson|
|Parent case||.454 Casull|
|Case type||Rimmed, straight|
|Bullet diameter||.452 in (11.5 mm)|
|Neck diameter||.478 in (12.1 mm)|
|Base diameter||.478 in (12.1 mm)|
|Rim diameter||.520 in (13.2 mm)|
|Rim thickness||.059 in (1.5 mm)|
|Case length||1.80 in (46 mm)|
|Overall length||2.290 in (58.2 mm)|
|Primer type||Large rifle magnum|
|Test barrel length: 8.375 inches
Source(s): Corbon Ammo, "Cartridges of the World", Buffalo Bore
The .460 S&W round is a lengthened, more powerful version of the popular .454 Casull, itself a longer and more powerful version of the .45 Colt, which is a longer and more powerful version of the .45 Schofield. Consequently, firearms that fire .460 S&W are usually capable of firing the less powerful .454 Casull, .45 Colt and .45 Schofield rounds, but this must be verified with each firearm's manufacturer. For instance, some lever actions are designed to handle cartridges within a certain length and bullet profile range. The reverse, however, does not apply: .45 Schofield, .45 Colt and .454 Casull handguns generally cannot safely fire .460 S&W rounds—nor can they even chamber the .460 S&W because of the longer case length. The length of the .460 S&W was intended to fully utilize the overall length (2.30") of the S&W X frame cylinder thereby increasing its powder capacity.
The .460 cartridge achieves high velocities by operating at pressures normally reserved for magnum rifle cartridges.
Smith and Wesson boasts that the .460 S&W is the highest velocity revolver cartridge in the world, firing bullets at 2330 ft/s. With Buffalo Bore's new loading, the .460 S&W can achieve nearly 2900 ft-lb of energy by driving a 360 grain bullet at 1900 ft/s. For comparison .500 S&W Magnum offers slightly more energy at the muzzle, driving a 350 grain bullet at 1975 ft/s for a total of 3031 ft-lb.
- Corbon DPX - 460 S&W Magnum.
- Barnes, Frank C. (2006) . Skinner, Stan, ed. Cartridges of the World (11th Edition ed.). Iola, WI, USA: Gun Digest Books. pp. 312, 338. ISBN 0-89689-297-2.
- "Buffalo Bore - 460 S&W Magnum". Archived from the original on 2009-07-20. Retrieved 2009-07-02.
- Double Tap Ammunition Co. -.500S&W Magnum.