British Ordnance Collectors Network

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20mm steel case

  1. SG500

    Look carefully or miss something good

    We've all seen hundreds of fired brass cases for the 20 X 110/RR Oerlikon "S". I nearly missed the one on the left........until I looked at it carefully, its a steel case! If anyone has any further information on the use of steel cases for this gun I would be interested in hearing from...