.32 NAA
Encyclopedia
The .32NAA is a cartridge/firearm 'system' designed and developed by the partnership of North American Arms and Cor-bon
Ammunition. The cartridge is based on a .380 ACP
case, which is necked-down to hold a 32 caliber bullet with the goal being an improvement in ballistic performance over either the .380 ACP or the .32 ACP
.
or earlier, which lead to the development of the 7.63x25 Mauser (also known as the .30 Mauser), followed by the 7.62x25 Tokarev. The benefits of bottleneck designs include smooth feeding and chambering and simple, robust headspacing.
The .32NAA is the most recent of a line of commercial bottleneck handgun cartridges. Renewed western interest in bottleneck handgun cartridges began with the .357 SIG
in 1994 (necking a .40 S&W
case down to a .355 bullet); followed by the .400 Corbon
in 1996 (necking a .45 ACP
case down to hold a .40 cal. bullet); and then the .25 NAA
in 1999 (necking a .32 ACP
case down to hold a .25 cal. bullet).
According to industry expert Ed Sanow, the 32NAA: produces more velocity, more energy and more stopping power than any conventional jacketed lead hollow point (JHP) .32 ACP, .380 ACP or .380 ACP (+P) with 15% less recoil (Power Factor) than the (+P); penetrates 8.3" of gelatin after passing through four (4) layers of denim, expanding to a .55" mushroom with a retained weight of 100%; and has a Fuller Index of 62% One-Shot Stops (compared to the 380 ACP Federal 90 gr. Hydra-Shok (53%)).
Cor-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....
Ammunition. The cartridge is based on a .380 ACP
.380 ACP
The .380 ACP pistol cartridge is a rimless, straight-walled pistol cartridge developed by firearms designer John Browning. The cartridge headspaces on the mouth of the case. It was introduced in 1908 by Colt, and has been a popular self-defense cartridge ever since...
case, which is necked-down to hold a 32 caliber bullet with the goal being an improvement in ballistic performance over either the .380 ACP or the .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...
.
History and Design
Bottleneck handgun cartridge designs experienced early success and have had continuing development since at least the 7.65x25mm Borchardt7.65x25mm Borchardt
The 7.65×25mm Borchardt cartridge was designed by Hugo Borchardt. It was the ammunition of the Borchardt C-93 pistol. This cartridge provided the basis for the 7.63×25mm Mauser cartridge, which has similar dimensions but a stronger powder charge...
or earlier, which lead to the development of the 7.63x25 Mauser (also known as the .30 Mauser), followed by the 7.62x25 Tokarev. The benefits of bottleneck designs include smooth feeding and chambering and simple, robust headspacing.
The .32NAA is the most recent of a line of commercial bottleneck handgun cartridges. Renewed western interest in bottleneck handgun cartridges began with 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 (necking 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 a .355 bullet); followed by 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 (necking 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 hold a .40 cal. bullet); and then the .25 NAA
.25 NAA
The .25 NAA was introduced by North American Arms company for their smaller & and lighter .32 ACP Guardian model. It is simply the .32 ACP necked down to accept .251" diameter bullets....
in 1999 (necking a .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...
case down to hold a .25 cal. bullet).
Performance
The cartridge delivers in excess of 1222 ft/s (372.5 m/s) velocity to a 60 gr proprietary bullet from Hornady. This generates 199 ft.lbf of energy from the 2.5" Guardian barrel (1453 ft/s & 287 ft.lbf from a 4" test barrel).According to industry expert Ed Sanow, the 32NAA: produces more velocity, more energy and more stopping power than any conventional jacketed lead hollow point (JHP) .32 ACP, .380 ACP or .380 ACP (+P) with 15% less recoil (Power Factor) than the (+P); penetrates 8.3" of gelatin after passing through four (4) layers of denim, expanding to a .55" mushroom with a retained weight of 100%; and has a Fuller Index of 62% One-Shot Stops (compared to the 380 ACP Federal 90 gr. Hydra-Shok (53%)).