.32 NAA

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.32 NAAA
Type	Pistol
Place of origin	USA
Production history
Designer	North American Arms / Ed Sanow
Manufacturer	North American Arms
Produced	2002
Specifications
Parent case	.380 ACP
Case type	Rimless, bottleneck
Bullet diameter	.312 in (7.9 mm)
Neck diameter	.336 in (8.5 mm)
Shoulder diameter	.373 in (9.5 mm)
Base diameter	.374 in (9.5 mm)
Rim diameter	.374 in (9.5 mm)
Rim thickness	.045 in (1.1 mm)
Case length	.680 in (17.3 mm)
Overall length	.984 in (25.0 mm)
Primer type	Small pistol
Ballistic performance
Bullet weight/type	Velocity	Energy
60 gr (3.9 g) JHP	1,222 ft/s (372 m/s)	199 ft·lbf (270 J)
Test barrel length: 2.5 Source: Cartridges of the World ^[1]

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 case, which is necked-down to hold a smaller 32 cal. bullet. The benefit is a remarkable gain in ballistic performance.The .32NAA Guardian pistol is designed around this cartridge. This gun is almost identical to .380 ACP Guardian, different only in the chamber and the size of the bore. The cartridge is manufactured by Cor-Bon, a well-recognized industry leader in the development of high-performance ammunition.

The cartridge delivers in excess of 1222 f.p.s. velocity to a 60 grain proprietary bullet from Hornady. This generates 199 ft·lbf (270 N·m) of energy from the 2.5" Guardian barrel (1453 f.p.s. & 287 ft·lbf (389 N·m) 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%,Has a Fuller Index of 62% One-Shot Stops, compared to (for example) the 380 ACP Federal 90gr. Hydra-Shok (53%).