Chamber Length
New to this. I bought a Parker 20 gauge O frame SN 165683 which I understand was built in 1913. I have been told to take it to a gunsmith to determine the chamber length and correct shell length, but don't have one in this area that gives me any confidence, or even one that I would trust to handle it. I fired a couple 2 3/4 inch light target loads through it and it kicked like a 16, but with the big drop at the heel, hard to tell.
I know you guys have dealt with this before. Anyone know if this is 2 3/4, 2 1/2 or something else?
Also, it has a dent that is barely visible about 10" from the muzzle on the full choke barrel. Could this become a problem?
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