1912 20 gauge chamber length Archived Message Posted by John McIntosh on August 22, 2018, 9:32 am I have acquired a 20 gauge 0 frame manufactured in 1912. What would it's chamber length be? Message Thread: 1912 20 gauge chamber length - John McIntosh August 22, 2018, 9:32 am Re: 1912 20 gauge chamber length - Drew Hause August 22, 2018, 9:53 am Re: 1912 20 gauge chamber length - John McIntosh August 22, 2018, 10:02 am   Searching