This question has been posted on other forums, but I did not get confirmation yet.
I have a shell case that had the exact dimensions (152x575, rim 176 mm) as a German SK /L 40. However, the base stamp is Italian (SMI). I do not have any information on the use of this type of gun by the Italians. A standard German WW2 C12 nA primer fits exactly.
Does anybody have information on Italian made shells for SK L/40 guns? Did Italy have these huns? Or are these shells made for another country (maybe Belgium, because I found it in Belgium and the stamp looks Belgian).