.25 ACP
The .25 ACP (6.35mm) centerfire pistol cartridge is a semi-rimmed, straight-walled pistol cartridge introduced by firearms designer John Browning in 1906.
Design
The cartridge was designed for early blowback pistols that lacked a breech locking mechanism. The cartridge is of semi-rimmed design meaning that the rim protrudes slightly beyond the diameter of the base of the cartridge. A recessed extractor groove allows an extractor to grab the cartridge reliably. It is the smallest centerfire pistol round in production, and is commonly chambered in small, so-called "vest pocket" pistols. A line of revolvers produced by the German firm Decker were chambered for this cartridge.
Performance
The .25 ACP is very compact and light, but short ranged and lacks stopping power. [1] It is in the same class as the .22 short and slightly less powerful than the .22 LR cartridge. Boxer primed cases can be reloaded.
Muzzle velocity
- 3.3 g (50 gr) full metal jacket: 232 m/s (760 ft/s)
Synonyms
- 25 Auto
- .25 Auto
- 6.35 mm
- 6.35 mm Browning
- 6.35x15.5mmSR