Also and should be noted, proof loads for the american market export shotguns (prussia marked pieces) prior to WW1 generally are not seen on the barrels.
Jeff Stephens
I've read this several time and am looking for a bit of clarification. If the longarm has the required "Prussia" country of origin mark, a pre-WWI version(post-1912) destined for export and devoid of a "Nitro" stamp, does that mean that German export longarms weren't exposed to Nitro proof even though they were slated for the US market where tbey would more than likely experience high pressures than in Germany? Was there an exception for German export guns?
Kind Regards,
Raimey
rse