Out of curiosity I just inspected my 1942 byf s/n 2611g and it has a stepped chamber. Per Hallock and van de Kant in The Mauser Parabellum, this s/n is about mid-point of the 1942 production run. My '36, '38, and '40 Mausers also have stepped chambers.
Another concern vs. the ammo in the OP would be if the primers are corrosive or not.
|