Ken, please elaborate on "out of proof". From what I understand, in England, a shotgun is out of proof if the internal measurements vary more than .010" from the original dimensions stamped on the barrel flats, correct?
One of the top candidates I am considering is an english 16 ga., originally nitro proofed for 1 1/8 oz./ 900 bar with factory 2 3/4" chambers.
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