Originally Posted by keith
Loss of contact of the barrels with the breech face is a problem. In fact, there is a commonly used term for it... "off face", or as the British say, "off the face". And the rear of the barrel flats should not contact the water table. All of the informed sources I've read on this subject also agree with Stan, including "Shotgun Technicana". Here's a link to a pretty good article on the subject by gunsmith Delbert Whitman:

https://shootingsportsman.com/re-jointing-a-gun/

Thanks for the reference and link Keith. I missed your post this morning for some reason. Good stuff.
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Tim