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76.2 x 603R ID please


Well-Known Member
Hello...can anyone help with this one? I bought this (ebay) as a 75x603R but as the headstamp clearly shows, it is 76.2mm calibre. The base diameter is 109mm. So what guns used it? Who made the case? What country? Any other info? Thanks very much indeed. Charley.


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The case length and rim diameter are a close match for the Bofors 75mm M/1937 AA gun, but nothing else in my lists.

Any large-calibre headstamp experts out there?