Hello there, this may be a really stupid question, but I am wondering if it is possible to reline an old Ithaca flues shotgun. It seems pretty solid mechanically but the bores are pitted very badly. I considered backboring it but those old doubles have pretty thin walls as it is. Would it be possible to run the reamer all the way down the length and then turn a blank and line it as you would a rim fire? Another thought was to see if I couldn't have it fitted for 20 ya barrels. Is that even possible? Thanks for your help!