20×138mmB
Type of ammunition
The 20×138mmB or Long Solothurn cartridge is a type of ammunition used mainly for anti-aircraft and anti-tank weapons during World War II. The designation means the caliber is 20 mm, the length of the cartridge case is 138 mm and B indicates it is a belted case. The loaded cartridge weighs 300 grams (10.7 oz).
01History
The 20×138mmB cartridge was developed by the Waffenfabrik Solothurn, a Swiss front company of Rheinmetall in the early 1930s from a less powerful cartridge 20×105mmB cartridge.
02Weapon platforms
The 20×138mmB cartridge is used in the following weapons:
Switzerland
Germany
- FlaK 30 and FlaK 38 single-barrel, and Flakvierling quadruple-barrel anti-aircraft guns
- KwK 30 and KwK 38 vehicle-mounted weapons
- MG C/30L aircraft gun
Italy
Finland
- Lahti L-39 anti-tank rifle
- Lahti L-40 anti-aircraft gun
Poland
- Nkm wz.38 FK anti-tank vehicle-mounted gun
Sources and credits
This article is adapted from the Wikipedia article “20×138mmB”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- 20x138mm.jpg by Esquilo, CC BY-SA 3.0
- Three 20x138B shells and 37 mm shell.JPG by MKFI, Public domain
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