.25 NAA
Encyclopedia
The .25 NAA was introduced by North American Arms
company for their smaller (height: 1/4" less; length: 1/3" less) & and lighter (by approx. 25%) .32 ACP
Guardian model. It is simply the .32 ACP necked down to accept .251" diameter bullets.
then further developed the cartridge and the NAA Guardian .25 NAA pistol combination for production in consultation with Ed Sanow. The finalized cartridge and pistol were introduced at the 2004 SHOT Show
.
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 cal. bullets); and the .400 Corbon
in 1996 (which necked a .45 ACP
case down to accept .40 cal. bullets).
North American Arms
North American Arms is a United States company, headquartered in Provo, Utah, that manufactures small pistols and mini-revolvers.The company was originally named Rocky Mountain Arms...
company for their smaller (height: 1/4" less; length: 1/3" less) & and lighter (by approx. 25%) .32 ACP
.32 ACP
.32 ACP , also known as the .32 Automatic is a pistol cartridge. It is a semi-rimmed, straight-walled cartridge developed by firearms designer John Browning, initially for use in the FN M1900 semi-automatic pistol...
Guardian model. It is simply the .32 ACP necked down to accept .251" diameter bullets.
History and Design
The cartridge was originally conceived and prototyped by gunwriter J.B. Wood and called the 25/32 JBW. North American Arms and Cor-Bon AmmunitionCor-Bon
Cor-Bon is a brand of small arms ammunition produced by Dakota Ammo Incorporated. The company, based in Sturgis, South Dakota, was founded in 1982 by Peter Pi....
then further developed the cartridge and the NAA Guardian .25 NAA pistol combination for production in consultation with Ed Sanow. The finalized cartridge and pistol were introduced at the 2004 SHOT Show
SHOT Show
The ' is an annual tradeshow for the shooting, hunting, and firearms industry. It is the biggest event of this type in the world together with IWA & OutdoorClassics , also taking place annually. "SHOT", besides being a general reference to shooting, is an acronym for "Shooting, Hunting and Outdoor...
.
It followed the successful introduction of two other commercial bottleneck handgun cartridges, the .357 SIG
.357 SIG
The .357 SIG pistol cartridge is the product of Swiss-German firearms manufacturer SIG-Sauer, in cooperation with the American ammunition manufacturer Federal Cartridge. While it is based on a .40 S&W case necked down to accept bullets, the .357 SIG brass is slightly longer...
in 1994 (which necked a .40 S&W
.40 S&W
The .40 S&W is a rimless pistol cartridge developed jointly by major American firearms manufacturers Winchester and Smith & Wesson. The .40 S&W was developed from the ground up as a law enforcement cartridge designed to duplicate performance of the FBI's reduced velocity 10mm cartridge which could...
case down to accept .355 cal. bullets); and the .400 Corbon
.400 Corbon
The .400 Corbon is an automatic pistol cartridge developed by Cor-Bon in 1997. It was created to mimic the ballistics of the powerful 10 mm Auto cartridge by means of a .45 ACP case, necked down to .40 caliber with a 25 degree shoulder....
in 1996 (which necked a .45 ACP
.45 ACP
The .45 ACP , also known as the .45 Auto by C.I.P., is a cartridge designed by John Browning in 1904, for use in his prototype Colt semi-automatic .45 pistol and eventually the M1911 pistol adopted by the United States Army in 1911.-Design and history:The U.S...
case down to accept .40 cal. bullets).