I knew you would have information for me, even if it is “I don’t know!”
If it is any help, the cases and the ammo is probably pre-WWI, but I am no expert on 7.63 M ammo. The box has a wood finish tissue paper over the brown cardboard. The box is strange,
lacking any indication of who made it. It may not even be made by Rheinmetall, but only used Rheinmetall cases.
Does anyone have pre-WWI or even immediately post-WWI 7.63 M specimens and/or boxes? I am interested in knowing when they began producing 7.63M and if they produced this caliber in the years immediately after WWI. It is possible that they produced this from prewar residue cases and the label was because it wasn’t clear if this production was legal immediately post WWI.
I thought identifying “F.J.” would help me identify the ammo. Perhaps the ammo can help identify FJ! Seems to me they must have been German and perhaps prewar. Do their clips show up on military 7.9x57 or only commercial???
Thanks again Pete!