.25 NAA
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.25 NAA | ||||||||
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Type | Pistol | |||||||
Place of origin | United States | |||||||
Production history | ||||||||
Designer | J.B. Wood | |||||||
Designed | 1999 | |||||||
Manufacturer | North American Arms | |||||||
Produced | 2002 | |||||||
Specifications | ||||||||
Parent case | .32 ACP | |||||||
Case type | Rimless, bottlenecked | |||||||
Bullet diameter | .251 in (6.4 mm) | |||||||
Neck diameter | .276 in (7.0 mm) | |||||||
Shoulder diameter | .333 in (8.5 mm) | |||||||
Base diameter | .337 in (8.6 mm) | |||||||
Rim diameter | .337 in (8.6 mm) | |||||||
Rim thickness | .046 in (1.2 mm) | |||||||
Case length | .745 in (18.9 mm) | |||||||
Overall length | .960 in (24.4 mm) | |||||||
Case capacity | 9.75 gr H2O (0.632 cm3) | |||||||
Rifling twist | 1 in 16 in (410 mm) | |||||||
Primer type | Small Pistol | |||||||
Maximum pressure | 23,000 psi (160 MPa) | |||||||
Ballistic performance | ||||||||
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Source(s): Cartridges of the World[1] |
The .25 NAA is a pistol cartridge introduced by the North American Arms company in 2002. It was originally created for use in a smaller and lighter model of their pistol.
It is based on a .32 ACP case necked down to accept .251-inch diameter (.25 ACP) bullets.
History and design[]
The cartridge was originally conceived of and prototyped by gunwriter , and called the "25/32 JBW".
North American Arms and Cor-Bon Ammunition then further developed the cartridge, and the NAA Guardian .25 NAA pistol combination for production in consultation with .
Introduction[]
The finalized cartridge and pistol were introduced at the 2004 SHOT Show.[2]
It followed the successful introduction of two other commercial bottleneck handgun cartridges, the .357 SIG in 1994 (which necked a .40 S&W case down to accept .355 caliber bullets); and the .400 Corbon in 1996 (which necked a .45 ACP case down to accept .40 caliber bullets).
Performance[]
According to NAA's website, the .25 NAA's 35 gr bullets travel faster (1,200 f.p.s.) and hit harder (20% more energy on average) than larger, .32 ACP caliber, bullets.
See also[]
References[]
- ^ Barnes, Frank C. (2006). Skinner, Stan (ed.). Cartridges of the World (11th ed.). Gun Digest Books. p. 288. ISBN 0-89689-297-2.
- ^ "25NAA Press Release" (Press release). North American Arms. Archived from the original on 2011-07-22. Retrieved 2018-11-26.
External links[]
Wikimedia Commons has media related to .25 NAA. |
- "NAA Guardian Review". defensereview.com. Archived from the original on 27 September 2007.
- "Penetration test results". naaminis.com. Archived from the original on 2011-07-22. Retrieved 2018-11-26. at NAA website
- Pistol and rifle cartridges
- Cor-Bon cartridges
- Ammunition stubs