20×138mmB

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20×138mmB
Three 20x138B shells and 37 mm shell.JPG
Three 20×138B cartridges and a 37 mm shell.
Type Anti-Armor/Anti-Air
Place of origin   Switzerland
Service history
Used by Switzerland, Germany, Italy, Finland, Poland
Wars World War II
Production history
Designed 1930
Manufacturer Swiss Solothurn
Number built 1930
Variants Long Solothurn
Specifications
Case length 20mm
Overall length 138mm
Ballistic performance
Bullet weight/type Velocity Energy
4.1 ounces (120 g) 2,950 feet per second (900 m/s) 34,655 ft·lbf (46,986 J) [1]

The 20×138mmB cartridge or Long Solothurn was a type of ammunition used mainly for anti-aircraft and anti-tank weapons during World War II. The designation means the caliber was 20 mm, the length of the cartridge case was 138 mm and B indicates it was a belted case. The loaded cartridge weighed 10.7 ounces (300 g).[1]

History[edit]

The 20×138mmB cartridge was initially created by the Swiss Solothurn company in the early 1930s.

Users[edit]

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

Switzerland[edit]

Germany[edit]

Italy[edit]

Finland[edit]

Poland[edit]

External links[edit]

References[edit]

  1. ^ a b Johnson, Melvin M., Jr. (1944). Rifles and Machine Guns. William Morrow and Company. p. 385.