Thanks for the opinions.
KY John, I'm not talking about practical application here, I don't have a gun with a single pit. I'm inquiring about a theoretical barrel, trying to get some data from to extrapolate with. Talking straight physics here.
Also, in regards to the measurement of 0.008, it also was an arbitrary number but I'm surprised that Chuck & Miller think it would be inconsequential in a 12ga. when 0.010 over bore is when the English Proof Houses (keepers of the flame, so to speak) say it would need reproof.
