8x22mm Nambu
Encyclopedia
The 8×22mm Nambu is a rimless
, bottleneck handgun cartridge introduced in Japan in 1904 for the Type A Nambu pistol
. It was also used in the Type 14 Nambu
and Type 94 pistols, Tokyo Arsenal Model 1927
, Type II machine pistol
, Hino Komuro M1908 Pistol
and the Type 100 submachine gun
. It uses 8.2 mm (.320") bullets. Power is relatively low, with military loads developing about 280 J (200 foot·pounds), comparable to the American .380 ACP
and substantially weaker than contemporary military cartridges such as 9×19mm Parabellum, .45 ACP
, and 7.62×25mm Tokarev. As per the fate of almost all contemporary Imperial Japanese weapon designs, the 8 mm Nambu production ceased after the end of World War II
, as the weapons that fired it were removed from service. Some small-scale production has occurred at various times in the United States
for use in captured Japanese pistols, but the expense of these rare cartridges makes handloading
common among owners of 8 mm Nambu pistols, although brass and custom ammunition are sometimes found, and as they are much less expensive, the situation eases for owners.
The Japanese Army cartridges in 8 mm Nambu have no markings on the headstamp unlike the Japanese Navy
cartridges.
Rim (firearms)
A rim is an external flange that is machined, cast, molded, stamped or pressed around the bottom of a firearms cartridge. The rim may serve a number of purposes, the most common being as the place for the extractor to engage...
, bottleneck handgun cartridge introduced in Japan in 1904 for the Type A Nambu pistol
Nambu pistol
was a semi-automatic pistol used by the Imperial Japanese Army and Navy during the First and Second World Wars. The pistol had two variants, the Type A , and the Type 14 .-History:...
. It was also used in the Type 14 Nambu
Nambu pistol
was a semi-automatic pistol used by the Imperial Japanese Army and Navy during the First and Second World Wars. The pistol had two variants, the Type A , and the Type 14 .-History:...
and Type 94 pistols, Tokyo Arsenal Model 1927
Tokyo Arsenal Model 1927
The was a submachine gun of Japanese origin, manufactured by Tokyo Arsenal. The Imperial Japanese Army developed the Model 1927, which was fed from a drum magazine. It was ordered from Tokyo Arsenal and tested by the army. However, it was inferior to submachine guns such as the MP 18, and broke...
, Type II machine pistol
Type II machine pistol
The was a submachine gun of Japanese origin chambered in the 8mm Nambu round and was issued to Japanese Naval units.The machine gun was produced in relatively small numbers for the IJN during the invasion of Shanghai. During its trial periods it was found that the 8mm round which it used had a...
, Hino Komuro M1908 Pistol
Hino Komuro M1908 Pistol
The Hino Komuro M1908 was a blow-forward operated, semi-automatic pistol of Japanese origin and was patented by Yujiro Komuro.It was chambered in 8mm Nambu, .32 ACP, and .25 ACP...
and the Type 100 submachine gun
Type 100 submachine gun
The was a Japanese submachine gun used during World War II, and the only submachine gun produced by Japan in any quantity. It was made in two basic variants referred to by American and British observers as the Type 100/40 and the Type 100/44, the latter also known as the Type 100...
. It uses 8.2 mm (.320") bullets. Power is relatively low, with military loads developing about 280 J (200 foot·pounds), comparable to the American .380 ACP
.380 ACP
The .380 ACP pistol cartridge is a rimless, straight-walled pistol cartridge developed by firearms designer John Browning. The cartridge headspaces on the mouth of the case. It was introduced in 1908 by Colt, and has been a popular self-defense cartridge ever since...
and substantially weaker than contemporary military cartridges such as 9×19mm Parabellum, .45 ACP
.45 ACP
The .45 ACP , also known as the .45 Auto by C.I.P., is a cartridge designed by John Browning in 1904, for use in his prototype Colt semi-automatic .45 pistol and eventually the M1911 pistol adopted by the United States Army in 1911.-Design and history:The U.S...
, and 7.62×25mm Tokarev. As per the fate of almost all contemporary Imperial Japanese weapon designs, the 8 mm Nambu production ceased after the end of World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
, as the weapons that fired it were removed from service. Some small-scale production has occurred at various times in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
for use in captured Japanese pistols, but the expense of these rare cartridges makes handloading
Handloading
Handloading or reloading is the process of loading firearm cartridges or shotgun shells by assembling the individual components , rather than purchasing completely assembled, factory-loaded cartridges...
common among owners of 8 mm Nambu pistols, although brass and custom ammunition are sometimes found, and as they are much less expensive, the situation eases for owners.
The Japanese Army cartridges in 8 mm Nambu have no markings on the headstamp unlike the Japanese Navy
Imperial Japanese Navy
The Imperial Japanese Navy was the navy of the Empire of Japan from 1869 until 1947, when it was dissolved following Japan's constitutional renunciation of the use of force as a means of settling international disputes...
cartridges.