I can't begin to imagine how many early American doubles with original short chambers have been reamed to 2 3/4". I don't think removing 3/16" of metal at a very, very shallow angle or degree at the front of the chamber is going to hurt anything on a set L C Smith fluid steel barrels. It will slightly reduce recoil and maybe improve patterns a wee bit. Just shoot reasonable loads and you will be fine. No regrets.
JR
It's nice of you to try to make the OP feel better and I'm sure you are probably right, at least I hope so. Still some issues here though. What you describe is just lengthening the forcing cones not deepening the chamber. No comparison. Reducing recoil? Laws of physics say otherwise. Better patterns? Where is the evidence for this? Sherman Bell's experiments on this subject were very informative but he never mentioned the added strength the shell casing provides to the chamber wall. Not at all negible and where it extends into the forcing cone will also add it's pressure resisting strength to that area.
Any increase in pressure caused by the constriction of the case mouth will be mitigated by the added wall strength.
My main complaint is still the same. People reaming deeper chambers without first measuring and profiling the barrels. In a country with no proof laws. Jesus wept.
