High-performance bottleneck pistol cartridge. Replicates .357 Magnum ballistics in auto pistol. Popular with law enforcement.
Type: Pistol
Introduced: 1994, Switzerland/USA
Parent case: .40 S&W
Standardization: SAAMI
Bullet diameter: 0.355" (9.02 mm)
Case length: 0.865" (21.97 mm)
Overall length: 1.14" (28.96 mm)
Max pressure: 40,000 PSI
Rim type: Rimless
Primer: Small Pistol
Typical twist rate: 1:16
Muzzle velocity: 1225–1510 fps
Muzzle energy: 450–540 ft-lbs
Effective range: 50 yd
Common bullet weights: 115, 124, 125, 147 gr
Primary use: Self Defense
Production status: Active
Also known as: 9x22mm · .357 SIG Sauer
History: Developed 1994 by SIG and Federal to duplicate .357 Magnum 125gr performance in semi-auto. Adopted by several federal agencies and state troopers. Reliability benefits from bottleneck design.
Notable firearms: SIG P226, SIG P229, Glock 31, Glock 32
Similar cartridges: 9mm Luger +P+, .40 S&W