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20mm Oerlikon Initial History and Specifications. The ordnance for this weapon actually dates back to 1918, when German arms engineer Reinhold Becker came up with a 20x80mm round that fired using ...
20mm Oerlikon Initial History and Specifications. The ordnance for this weapon actually dates back to 1918, when German arms engineer Reinhold Becker came up with a 20x80mm round that fired using ...