7×20mm Nambu
The 7×20mm Nambu is a rimless, bottleneck handgun cartridge designed in Japan for use in the Type B or "Baby" model Nambu pistol. 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.
7×20mm Nambu
Stas Kozlovskiy · CC BY-SA 4.0
- Name
- 7×20mm Nambu
- Field
- pistol cartridge
VALÉORINE Encyclopedia
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Documentary summary
The 7×20mm Nambu is a rimless, bottleneck handgun cartridge designed in Japan for use in the Type B or "Baby" model Nambu pistol. 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.
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wikidata · Q270067 · wikipedia · 7×20mm Nambu
In this article
Key facts
• Name — 7×20mm Nambu • Origin — Japan • Type — Pistol • Service — 1903–1945 • Used By — Japan • Wars — World War II • Designer — Kijiro Nambu • Design Date — 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? • Number — 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. • Is Si Specs — yes • Case Type — Bottleneck rimless • Bullet — 7.08 • Neck — 7.64 • Shoulder — 8.62 • Base — 8.91 • Rim Dia — 9.11 • Rim Thick — 0.98 • Case Length — 19.80 • Length — 26.80 • Primer — Small pistol • Is Si Ballistics — yes • Bw1 — 56 • Btype1 — FMJ • Vel1 — 240 • En1 — 108 • Test Barrel Length — 83 mm (3.25 in)
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Miller, David. Fighting Men of World War II, Volume I: Axis Forces—Uniforms, Equipment, and Weapons. Stackpole Books. 276. 2007. 978-0-8117-0277-5.
- 2.Krause Publications. Gun Digest 2010. 2009.
- 3.Dave Maccar. Handguns & Handgun Shooting. 88. 2016. 978-1440246104.
- 4.T J Mullin. 365 Guns You Must Shoot: The Most Sublime, Weird, and Outrageous Guns Ever. 167. 2015.
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
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