20×138mmB
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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
20×138B cartridge and a tape measure in centimeters
Three Finnish and Italian 20×138B cartridges next to a 37mm anti-tank shell
Lahti L-39
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The Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration and range, but its size made transportation difficult. It was nicknamed "Nors
20×138mmB
…Cannone-Mitragliera da 20/70 (Scotti) Lahti L-39 anti-tank rifle Lahti L-40 anti-aircraft gun…
A Lahti L-39 anti-tank rifle.
An L-39 being used as an improvised anti-aircraft weapon in 1942