Eightbore
I haven't removed anywhere that much material. I used a magic marker and coated teh ends of the barrels with black,let dry and put the barrels on the frame. I then looked at the wear marks and just removed the smallest amount of material. This is not doing any good after three tries so I am seeking professional help.Doing this procedure has made the worn off spot move around. I suspect that the standing breech has moved a few thousand's but I am just not sure.

Thanks for yor help, Gordon

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