.25 ACP
Pistol cartridge designed by John Moses Browning / From Wikipedia, the free encyclopedia
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".25" redirects here. For other cartridges in this caliber, see .25 caliber. For other uses, see 1/4 (disambiguation).
The .25 ACP (Automatic Colt Pistol), also known as the .25 Auto, .25 Automatic, or 6.35×16mmSR) is a semi-rimmed, straight-walled centerfire pistol cartridge introduced by John Browning in 1905 alongside the Fabrique Nationale M1905 pistol.
Quick Facts Type, Place of origin ...
.25 ACP | ||||||||||||||||
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Type | Pistol | |||||||||||||||
Place of origin | United States and Belgium | |||||||||||||||
Production history | ||||||||||||||||
Designer | John Browning | |||||||||||||||
Designed | 1905 | |||||||||||||||
Produced | 1905–present | |||||||||||||||
Specifications | ||||||||||||||||
Case type | Semi-rimmed, straight | |||||||||||||||
Bullet diameter | .2512 in (6.38 mm) | |||||||||||||||
Land diameter | .2429 in (6.17 mm) | |||||||||||||||
Neck diameter | .276 in (7.0 mm) | |||||||||||||||
Base diameter | .278 in (7.1 mm) | |||||||||||||||
Rim diameter | .302 in (7.7 mm) | |||||||||||||||
Rim thickness | .043 in (1.1 mm) | |||||||||||||||
Case length | .615 in (15.6 mm) | |||||||||||||||
Overall length | .910 in (23.1 mm) | |||||||||||||||
Rifling twist | 1:16 | |||||||||||||||
Primer type | Small pistol | |||||||||||||||
Maximum pressure | 25,000 psi (170 MPa) | |||||||||||||||
Maximum CUP | 25,000[1] CUP | |||||||||||||||
Ballistic performance | ||||||||||||||||
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Test barrel length: 2" Source(s): Guns & Ammo Magazine |
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