.500 S&W Magnum

The .500 S&W Magnum or 12.7×41mmSR is a .50 caliber semi-rimmed revolver cartridge developed by Cor-Bon in partnership with the Smith & Wesson "X-Gun" engineering team for use in the Smith & Wesson Model 500 X-frame revolver and introduced in February 2003 at the SHOT Show. From its inception, it was intended to be the most powerful handgun cartridge to date, with the capacity to harvest all North American game species. While more powerful handgun cartridges, such as the .500 Bushwhacker, have emerged since, they are only available in custom firearms, and the .500 S&W remains the most powerful production handgun cartridge.

.500 S&W Magnum
A .500 S&W Magnum Cartridge.
TypeRevolver, Pistol, and Rifle
Place of originUnited States
Production history
DesignerCor-Bon
Smith & Wesson
Designed2003
ManufacturerSmith & Wesson
Produced2003–present
Specifications
Case typeSemi-rimmed, straight
Bullet diameter.500 in (12.7 mm)
Neck diameter.526 in (13.4 mm)
Base diameter.526 in (13.4 mm)
Rim diameter.556 in (14.1 mm)
Rim thickness.056 in (1.4 mm)
Case length1.625 in (41.3 mm)
Overall length2.3 in (58 mm)
Primer typeLarge pistol originally, now large rifle
Maximum pressure60,000 psi (410 MPa)
Ballistic performance
Bullet mass/type Velocity Energy
300 gr (19 g) FTX Hornady 2,075 ft/s (632 m/s) 2,868 ft⋅lbf (3,888 J)
350 gr (23 g) XTP HP Underwood 1,912 ft/s (583 m/s) 2,842 ft⋅lbf (3,853 J)
520 gr (34 g) WFNGC TII +L 1,580 ft/s (480 m/s) 2,882 ft⋅lbf (3,907 J)
620 gr (40 g) WFNGC TII +L 1,390 ft/s (420 m/s) 2,660 ft⋅lbf (3,610 J)
700 gr (45 g) WFN Underwood 1,200 ft/s (370 m/s) 2,238 ft⋅lbf (3,034 J)
Test barrel length: 8.375 in
Source(s): Hornady (300 gr), Underwood, and TII Armory (520 gr +L and 620 gr +L),
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