- 8x22mm Nambu
Infobox Firearm Cartridge
name= 8x22mm Nambu
caption=
origin= flagcountry|Japan
type=
service= 1904-1945
used_by= Japan
wars=Second Sino-Japanese War ,World War II
designer=Kijiro Nambu
design_date= 1904
manufacturer=
number=
variants=
is_SI_specs=yes
parent=
case_type=bottleneck rimmed
bullet=8.18
neck=8.73
shoulder=9.86
base=10.32
rim_dia=10.50
rim_thick=
case_length=21.25
length=31.75
case_capacity=
rifling=
primer=small pistol
max_pressure=
max_cup=
filling=
filling_weight=
detonation=
yield=
is_SI_ballistics=yes
bwunit=
bw1=102
btype1=FMJ
vel1=290
en1=274
bw2=
btype2=
vel2=
en2=
bw3=
btype3=
vel3=
en3=
bw4=
btype4=
vel4=
en4=
bw5=
btype5=
vel5=
en5=
test_barrel_length=117 mm (4.61 inches)
balsrc=The 8 mm 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, 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 as9x19mm Parabellum and7.62x25mm Tokarev . As per the fate of most all contemporary Imperial Japanese weapon designs, the 8 mm Nambu production ceased after the end ofWorld War II , as the weapons that fired it were removed from service. Some small-scale production has occurred at various times in theUnited States for use in captured Japanese pistols, but the expense of these rare cartridges makeshandloading common among owners of 8 mm Nambu pistols.The Japanese Army cartidges in 8 mm Nambu have no markings on the headstamp unlike the Japanese Navy cartridges.
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