Just to clarify, Paul's ".100 to .120 around the breech end" would refer to the end of chamber wall thickness.
I just measured the at the very end of the breech WT of a 10g Ithaca at .230", a 12g 00 Smith at .210", and a 16g 0 Regular frame Smith at .200".
Last edited by Drew Hause; 04-16-2019 at 09:40 AM..
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