First snail drums were developed as early as 1915. The second type were more simplified and production began around 1916 or 1917, for whatever reason I can no longer find results for it on google like I used to be able to and did frequently.
As I recall, he (Eric) has a known pre-war commercial Artillery Luger so he may have loaded up a drum mag with .30 Luger ammo if that’s what his commercial artillery is chambered for. I suppose he is the one most apt to answer that one though.
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-QM
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