20x138mmB

20×138mmB

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).[1]

Quick Facts Type, Place of origin ...

History

Three Finnish and Italian 20×138B cartridges next to a 37mm anti-tank shell

The 20×138mmB cartridge was developed by the Waffenfabrik Solothurn [de], a Swiss front company of Rheinmetall in the early 1930s from a less powerful cartridge 20×105mmB cartridge.

Weapon platforms

The 20×138mmB cartridge is used in the following weapons:

Switzerland

Germany

Italy

Finland

Poland

Wikimedia Commons has media related to 20 x 138 mm.

References

  1. [1]
    Johnson, Melvin M. Jr. (1944). Rifles and Machine Guns. William Morrow and Company. p. 385.
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