.40 S&W
Pistol cartridge / From Wikipedia, the free encyclopedia
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".40" and ".40 caliber" redirect here. For other cartridges with this diameter, see 10 mm caliber.
The .40 S&W (10.2x22mm) is a rimless pistol cartridge developed jointly by American firearms manufacturers Smith & Wesson and Winchester in 1990.[3] The .40 S&W was developed as a law enforcement cartridge designed to duplicate performance of the Federal Bureau of Investigation's (FBI) reduced-velocity 10mm Auto cartridge which could be retrofitted into medium-frame (9 mm size) semi-automatic handguns. It uses 0.40-inch (10 mm) diameter bullets ranging in weight from 105 to 200 grains (6.8 to 13.0 g).[4]
Quick Facts Type, Place of origin ...
.40 S&W | ||||||||||||||||||||||||
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Type | Pistol | |||||||||||||||||||||||
Place of origin | United States | |||||||||||||||||||||||
Production history | ||||||||||||||||||||||||
Designer | Bob Klunk | |||||||||||||||||||||||
Designed | January 17, 1990 | |||||||||||||||||||||||
Produced | 1990–present | |||||||||||||||||||||||
Specifications | ||||||||||||||||||||||||
Parent case | 10mm Auto | |||||||||||||||||||||||
Case type | Rimless, straight | |||||||||||||||||||||||
Bullet diameter | .400 in (10.2 mm) | |||||||||||||||||||||||
Land diameter | .390 in (9.9 mm) | |||||||||||||||||||||||
Neck diameter | .423 in (10.7 mm) | |||||||||||||||||||||||
Base diameter | .424 in (10.8 mm) | |||||||||||||||||||||||
Rim diameter | .424 in (10.8 mm) | |||||||||||||||||||||||
Rim thickness | .055 in (1.4 mm) | |||||||||||||||||||||||
Case length | .850 in (21.6 mm) | |||||||||||||||||||||||
Overall length | 1.135 in (28.8 mm) | |||||||||||||||||||||||
Case capacity | 19.3 gr H2O (1.25 cm3) | |||||||||||||||||||||||
Rifling twist | 1 in 16 in. (406 mm) | |||||||||||||||||||||||
Primer type | Small pistol | |||||||||||||||||||||||
Maximum pressure | 35,000 psi (240 MPa) | |||||||||||||||||||||||
Ballistic performance | ||||||||||||||||||||||||
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Test barrel length: 4 inches (100 mm) Source(s): [1][2] |
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