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20×138mmB
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20×138mmB

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Also known as 20 x 138 mm Belted, Long Solothurn, 20x138mmB, 20 mm L/138, 20 mm Solothurn, 20×138mmB cartridge

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 .

Key facts

Firearm cartridge.base
26.86
Firearm cartridge.name
20×138mmB
Firearm cartridge.image
File:20x138mm.jpg
Firearm cartridge.image_size
320 px
Firearm cartridge.caption
20×138B cartridge and a tape measure in centimeters
Firearm cartridge.type
Anti-armor/anti-air
Firearm cartridge.used_by
Switzerland, Germany, Italy, Finland, Poland
Firearm cartridge.wars
World War II
Firearm cartridge.design_date
1930
Firearm cartridge.manufacturer
Swiss Solothurn
Firearm cartridge.variants
Long Solothurn
Firearm cartridge.is_SI_specs
yes
Firearm cartridge.case_type
Bottleneck, belted
Firearm cartridge.bullet
20 mm
Firearm cartridge.neck
20.9
Firearm cartridge.shoulder
25.5
Firearm cartridge.rim_dia
28.48
Firearm cartridge.rim_thick
26.86

via Wikipedia infobox

~1 min read

Encyclopedic overview

8 sections
Contents
  • History
  • Weapon platforms
  • Switzerland
  • Germany
  • Italy
  • Finland
  • Poland
  • References

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 .

== History == thumb|Three Finnish and Italian 20×138B cartridges next to a 37mm anti-tank shell 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.

Excerpted from Wikipedia’s “20×138mmB” article, available under the CC BY-SA 4.0 licence.

Gallery (2)