9mm Japanese revolver

The 9mm Japanese revolver, also known as the 9×22mmR Type 26, was a cartridge similar to the .38 S&W. These cartridges are not interchangeable. The rim diameter is thinner and the chamber pressure is lower than most .38 S&W loads. The cartridge saw service with the Type 26 revolver in the Russo-Japanese War, World War I, and World War II in a limited role. The Type 26 was later replaced as the service pistol of the Imperial Japanese Army by the semi automatic Nambu pistol, which was chambered for the 8x22mm Nambu cartridge.

9×22mmR Type 26
Type	Revolver
Place of origin	Japan
Service history
In service	1893–1945
Used by	Japan
Wars	Russo-Japanese War World War I Second Sino-Japanese War World War II
Production history
Designed	1893
Specifications
Case type	Rimmed, tapered
Bullet diameter	9.04 mm (0.356 in)
Neck diameter	9.47 mm (0.373 in)
Base diameter	9.83 mm (0.387 in)
Rim diameter	11.05 mm (0.435 in)
Rim thickness	0.75 mm (0.030 in)
Case length	21.89 mm (0.862 in)
Overall length	29.99 mm (1.181 in)
Primer type	Small pistol
Ballistic performance
Bullet mass/type Velocity Energy 9.7 g (150 gr) LRN 150 m/s (490 ft/s) 111 J (79 ft⋅lbf) 9.7 g (150 gr) LRN 229 m/s (750 ft/s) 252 J (180 ft⋅lbf)

Not to be confused with Type 26 revolver.