Posted by Drew Hause on January 31, 2021, 5:54 pm, in reply to "12 gauge shell size for outside hammer with royal steel barrels"
From the beginning, unless requested otherwise (and so stamped) 12g hammer and hammerless L.C. Smith chambers were 2 3/4".
A rare exception
What you do not know however is if someone has lengthened or modified the chamber or forcing cone since it was purchased, and the gun should be checked by a double gun specialist before use.
500
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