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.[1] The cartridge saw action with the Type 26 revolver in the Russo-Japanese War, World War I, and World War II in a limited role, but the service pistol of the Imperial Japanese Army was the semi automatic Nambu pistol, which fired the 8x22mm Nambu round, which was comparable to .32 ACP.

9×22mmR Type 26
TypeRevolver
Place of originJapan
Service history
In service1893–1945
Used byJapan
WarsRusso-Japanese War
World War I
Second Sino-Japanese War
World War II
Production history
Designed1893
Specifications
Case typeRimmed, tapered
Bullet diameter9.04 mm (0.356 in)
Neck diameter9.47 mm (0.373 in)
Base diameter9.83 mm (0.387 in)
Rim diameter11.05 mm (0.435 in)
Rim thickness0.75 mm (0.030 in)
Case length21.89 mm (0.862 in)
Overall length29.99 mm (1.181 in)
Primer typeSmall pistol
Ballistic performance
Bullet mass/type Velocity Energy
9.7 g (150 gr) LRN 150 m/s (492 ft/s) 111 J (79 ft⋅lbf)
9.7 g (150 gr) LRN 229 m/s (751 ft/s) 252 J (180 ft⋅lbf)
Not to be confused with Type 26 revolver.

References
  1. "Nambu World Ammunition & Reloading Page". Retrieved 9 July 2011.
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