Quote:
Originally Posted by harry gietler
Most overbore in shotgun barrels is called Honing . Harry
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No entirely correct.
Plenty of Parker guns were overbored when built. Especially prior to 1900, I have measured some 12g. barrels with bore diameter creeping up into the 10g. range and the barrels were completely original. On the Super Fox overboring was one of the keys to its long range performance.
But yes, bores can be honed out after the fact to clean up pitting or damage, which can increase the bore diameter slightly. But just because a bore is oversized, does not mean that it must have been messed with after the fact.