Ron, you make a good point regarding a Cartridge Counter being in caliber 9mm and using the old style parts. However, there is a difference between a pistol and a carbine. With reference to Tom's comments, the technical question that I cannot answer is whether a standard 9 mm cartridge would be able to cycle the entire action of a Luger Carbine or whether a 9mm +P cartridge would be required in the same manner as a 471A cartridge. I would assume that everything is proportional, so I suppose that a '9 mm Carbine' would require a +P cartridge, which by the way, was not mass produced. For example, if we were able to discover that 9 mm Carbine would require a +P cartridge, where would a hunter in the early to mid 1900's be able to buy such a box of ammunition? Using data which I had obtained from one of my catalogs listing 471A ammunition, I believe that the a 471A cartridge has between 9%-12% more power than a 471 pistol cartridge, if I remember correctly.
This is a very interesting topic, but I prefer solid facts instead of mystery - therefore, I believe that the M1902 Luger Carbine was manufactured by DWM only in caliber 7,65 mm (471A).
Cheers,
Albert
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