.25 ACP

typePistol

service
used_by
wars

designerJohn Browning
design_date1905
manufacturer
production_date
number
variants

is_SI_specs
parent
case_typeSemi-rimmed, straight
bullet.251
neck.276
shoulder
base.277
rim_dia.298
rim_thick
case_length.62
length.91
rifling1:16
primerBoxer primerBoxer primersBoxer Small Pistol

is_SI_ballistics
bw135
btype1Safety
vel11150
en1103
bw235
btype2JHP
vel2900
en263
bw345
btype3JHP
vel3815
en366
bw450
btype4FMJ
vel4760
en465
bw5
btype5
vel5
en5
test_barrel_length2 in
balsrc


The ".25 ACP (ammunition)ACP" ("A"utomatic "C"olt "P"istol) (6.35x16mmSR) centerfire pistol Cartridge (weaponry)cartridge is a Rim (firearms)semi-rimmed, straight-walled pistol cartridge introduced by John Browning in 1905 alongside the Fabrique Nationale Colt Model 1908 Vest Pocketmodel 1905 pistol.

Design
The cartridge was designed for early Blowback (arms)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 'pocket pistolvest pocket' pistols. The .25 ACP has achieved widespread use due to the popularity of the Colt Model 1908 Vest Pocket and later copies.

Though the .25 ACP was designed for semi-automatic pistols, various .25 ACP revolvers were produced in the early 20th Century by Belgian, French, and German gunmakers such as Adolph Frank and Decker.http://www.littlegun.be/arme%20allemande/artisan%20c%20d/a%20decker%20walter%20gb.htm In the late 20th Century, Bowen Classic Arms produced a custom Smith & Wesson revolver in .25 ACP.Bowen, Hamilton. 'The Custom Revolver'. Privately printed, 2001. ISBN 978-0-9713366-0-5

Following World War II, the Italian Lercker machine pistol was chambered for the .25 ACP, but achieved little distribution.

Performance
The use of the .25 ACP allows for a very compact lightweight gun, but the cartridge is relatively short-ranged and low-power, putting it in the same class as the .22 LR rimfire cartridge. Although the .22 is slightly more powerful when fired from equal length short barrels, the .25 ACP is viewed by some as a better choice for personal defense due to its more reliable semi-rimmed centerfire case design.

The round is favored by producers of so-called 'Saturday night specialSaturday Night Special' pistols, which often cost $100 or less, because in terms of reliability it is more forgiving than .22LR in low-quality designs with loose tolerances. These inexpensive pistols have been the target of much legislation.

Manufacturers have loaded commercial hollow point bullets to higher velocities than the standard FMJ load. Both rounds certainly pose an effective psychological threat against attackers not armed with a firearm. Firearms chambered for the .25 ACP cartridge run the gamut from inexpensive, simply made guns like the Raven MP-25 to higher quality and relatively expensive guns like the Baby Browning or Beretta Beretta 21 BobcatBobcat. The tiny cartridge has also been used in some precision crafted target pistols.


Synonyms
25 Auto
.25 Auto
6.35 mm
6.35 mm Browning
6.35x16mmSR (SR — Semi-Rimmed)

See also
6 mm caliber

References




en.wikipedia.org