8×22mm Nambu
| 8×22mm Nambu | ||||||||
|---|---|---|---|---|---|---|---|---|
Japanese military pistol cartridge. | ||||||||
| Type | Pistol | |||||||
| Place of origin | Japan | |||||||
| Service history | ||||||||
| In service | 1904–1945 | |||||||
| Used by | Japan | |||||||
| Wars | Russo-Japanese War World War I Second Sino-Japanese War World War II | |||||||
| Production history | ||||||||
| Designer | Kijirō Nambu | |||||||
| Designed | 1902 | |||||||
| Specifications | ||||||||
| Case type | Bottleneck, semi-rimmed | |||||||
| Bullet diameter | 8.13 mm (0.320 in) | |||||||
| Neck diameter | 8.71 mm (0.343 in) | |||||||
| Shoulder diameter | 10.00 mm (0.394 in) | |||||||
| Base diameter | 10.23 mm (0.403 in) | |||||||
| Rim diameter | 10.50 mm (0.413 in) | |||||||
| Rim thickness | 0.92 mm (0.036 in) | |||||||
| Case length | 21.43 mm (0.844 in) | |||||||
| Overall length | 31.56 mm (1.243 in) | |||||||
| Primer type | Small pistol | |||||||
| Ballistic performance | ||||||||
| ||||||||
| Test barrel length: 117 mm (4.61 in) | ||||||||
The 8×22mm Nambu is a rimless, bottleneck handgun cartridge introduced in Imperial Japan in 1904, used in the Type 100 submachine gun, Nambu pistols (Type A, the Type B and Type 14) and the Nambu Type 94 pistol. The 8×22mm Nambu cartridge was used in both the Pacific War and Second Sino-Japanese War.