My WAG is about 0.0115" as a minimum... or should I say that for my own personally safety I wouldn't shoot an old sxs that had less than 0.0110" at the juncture of the chamber and the beginning of the forcing cone.
I have a Damascus 0-frame 16 gauge GHE that Oscar Gaddy measured at 0.0063" and wrote to me that it "is probably safe to shoot with pressures of less than 7,500 psi."
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"I'm a Setter man.
Not because I think they're better than the other breeds,
but because I'm a romantic - stuck on tradition - and to me, a Setter just "belongs" in the grouse picture."
George King, "That's Ruff", 2010 - a timeless classic.
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