Jim:
To answer your questions, first I'd ask is there a 70mm on either of the ejector faces? the NF in a rectangle just may point to Neumann Frères. At some point, the stamp of the Escutcheon/Shield with the Leaning/Falling Fir Tree surmounted by crossed iron clubs or flails noted the 2nd pass(1st pass was black powder) being semi-smokeless yielding a pressure given as 12,800 psi. That's the Weipert values. The German method should have been a powder charge of 2 times the service load behind a shot charge of 1 1/3 times the service load. Seeing that the German occupation saw what is given as a total replacement of the proof law, and that the 1939 rules replaced black powder with semi-smokeless for almost all instances, I wonder if the Weipert facility in 1939 was looking in the past or toward the future?
Kind Regards,
Raimey
rse
