7×20mm Nambu
Pistol cartridge
7×20mm Nambu | ||||||||
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7×20mm Baby Nambu | ||||||||
Type | Pistol | |||||||
Place of origin | Japan | |||||||
Service history | ||||||||
In service | 1903–1945 | |||||||
Used by | Japan | |||||||
Wars | World War II | |||||||
Production history | ||||||||
Designer | Kijiro Nambu | |||||||
Designed | 1902 | |||||||
Manufacturer | Type B Nambu Pistol 1. Tokyo Artillery Arsenal, Koishigawa, Tokyo 1903–1923 and 2. Tokyo Gas and Electric Co., Ltd., Tokyo 1923–1929. Was ammunition made in the same factories? | |||||||
No. built | Pistols - Possibly less than 6,500. 1. Tokyo c. 5,900 and 2. TGE c. 550. Number of 7×20mm rounds made is unknown but today they are a quite rare collector's item occasionally found in WW2 boxes of 50 rounds. | |||||||
Variants | At least 5, including a dummy. Variations mainly occur in type of bullet crimping, jacket type and rim thickness. | |||||||
Specifications | ||||||||
Case type | Bottleneck rimless | |||||||
Bullet diameter | 7.08 mm (0.279 in) | |||||||
Neck diameter | 7.64 mm (0.301 in) | |||||||
Shoulder diameter | 8.62 mm (0.339 in) | |||||||
Base diameter | 8.91 mm (0.351 in) | |||||||
Rim diameter | 9.11 mm (0.359 in) | |||||||
Rim thickness | 0.98 mm (0.039 in) | |||||||
Case length | 19.80 mm (0.780 in) | |||||||
Overall length | 26.80 mm (1.055 in) | |||||||
Primer type | Small pistol | |||||||
Ballistic performance | ||||||||
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Test barrel length: 83 mm (3.25 in) |
The 7×20mm Nambu is a rimless, bottleneck handgun cartridge designed in Japan for use in the Type B or "Baby" model Nambu pistol.[1] The cartridge is a scaled-down version of the 8×22mm Nambu used in all other Nambu pistol models. It has a muzzle energy greater than that of the .25 ACP and closer to the .32 ACP.[2][3][4]
References
- ^ Miller, David (2007). Fighting Men of World War II, Volume I: Axis Forces—Uniforms, Equipment, and Weapons. Stackpole Books. p. 276. ISBN 978-0-8117-0277-5.
- ^ "An Introduction to the Military Handguns of Imperial Japan". Gun Digest 2010. Krause Publications. 2009.
- ^ Dave Maccar (2016). Handguns & Handgun Shooting. p. 88. ISBN 978-1440246104.
- ^ T J Mullin (2015). 365 Guns You Must Shoot: The Most Sublime, Weird, and Outrageous Guns Ever. p. 167.
- The Hand Cannons of Imperial Japan, Derby, H., 1981, Taylor Publishing Company, ISBN 0-940424-00-2
- The Weapons Series no. 5 THE BABY NAMBU Japanese 7-mm. Pistol, Marsh, Roger, 1946, Pub. by the author.
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Japanese infantry weapons of World War II
Swords: Guntō, Bayonets: Type 30, Type 2
- Type 26 revolver
- Type 14 (Nambu)
- North China Type 19
- Sugiura Type
- Type 94 pistol
- Hamada Type 1, Type 2 pistols
- Experimental Model 1
- Experimental Model 2
- Type 100
- Type Be
- Type Su
- Beretta Model 38
- Experimental Type 4
- Experimental Type 5
- 7×20mm Nambu
- 8×22mm Type 14
- 9×19mm Parabellum
- 9×22mmR Type 26
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