20×138mmB

20×138mmB — Photo: Esquilo · CC BY-SA 3.0 · background removed

Key specs

Type: Rifle
Origin: Switzerland
Introduced: 1930
Case type: belted, bottleneck
Bullet diameter: 20.00 mm
Case length: 138.00 mm
Overall length: 202.70 mm

Weapons chambered for it 1

Sniper riflesLahti L-3920×138mmBFinland · 1939

Sources

Wikipedia: 20×138mmB, Wikipedia