I don't get to see very many pristine and unshot old guns so its always interesting.
I have just an old beater G that has been shot many times. I know that because of the shell base imprints on the standing breech. It has shiny bores because it was cleaned after use. I don't have a wall thickness gauge and I am no expert, but I did measure the ID of the bores and they are right on for the gauge, so I know they have not been honed. I know that these 2 frame 12's had an original wall thickness of .035 to .045 down the barrels, so I figure I will risk it.
Here are a few pictures including a couple boxes of what I shoot through the old G and a Parker table of recommended loads at the time your gun was made. I usually shoot lighter loads because I don't want to whack my shoulder but these loads are for waterfowl and for late season, wild, plains pheasant that we have out here.
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