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 action with the

Type 26 revolver was the first modern revolver adopted by the Imperial Japanese Army. It was developed at the Koishikawa Arsenal and is named for its year of adoption in the Japanese dating system (the 26th year of the Meiji era, i.e., 1893). The revolver saw a ...

in the

Russo-Japanese War The Russo-Japanese War ( ja, 日露戦争, Nichiro sensō, Japanese-Russian War; russian: Ру́сско-япóнская войнá, Rússko-yapónskaya voyná) was fought between the Empire of Japan and the Russian Empire during 1904 and 1 ...

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

, and

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

in a limited role, but the

service pistol A service pistol, also known as a personal weapon or an ordnance weapon, is any handgun issued to regular military personnel or law enforcement officers. Typically, service pistols are revolvers or semi-automatic pistols issued to Officer (armed ...

of the

Imperial Japanese Army The was the official ground-based armed force of the Empire of Japan from 1868 to 1945. It was controlled by the Imperial Japanese Army General Staff Office and the Ministry of the Army, both of which were nominally subordinate to the Emperor o ...

was the semi automatic

Nambu pistol are a series of semi-automatic pistols produced by the Japanese company Koishikawa Arsenal, later known as the Tokyo Artillery Arsenal.Hogg, Ian, ''Pistols of the World 4th Edition'' (2004) p. 191. The series has three variants, the Type A, the ...

, which fired the

8x22mm Nambu 8X or 8-X may refer to: *8x, or eight times in multiplication *8X, code name for Enhanced Imaging System *8X, abbreviation for Octuple scull * Precorrin-8X methylmutase * South African Class 8X 2-8-0 locomotive *8X Bayshore; see List of San Fr ...

round, which was comparable to

.32 ACP .32 ACP ( Automatic Colt Pistol, also known as .32 Automatic) is a centerfire 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 pi ...

References

http://members.shaw.ca/nambuworld/originalcollectibleammo.htm {{Japanese WWII infantry weapons Pistol and rifle cartridges