20x138mmB

The 20x138mmB cartridge 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 cartridge was also known as the Long Solothurn cartridge.

History

The 20x138mmB cartridge was initially created by the Swiss Solothurn company in the early 1930s.

Users

The 20x138mmB cartridge was used in the following weapons:

Switzerland

* Solothurn anti-tank rifles: S-18/1000 and S-18/1100

Germany

* FlaK 30 and FlaK 38 anti-arcraft guns
* KwK 30 and KwK 38 vehicle-mounted weapons
* MG C/30L aircraft gun

Italy

* anti-aircraft guns: Cannone-Mitragliera da 20/65 modello 35 (Breda) and Cannone-Mitragliera da 20/77 (Scotti)

Finland

* Lahti L-39 anti-tank rifle
* Lahti L-40 anti-aircraft gun