Thanking you Chuck for the infor. and others for your opinions. OD of left barrel is .915 inch opposite where the partial bulge is on right barrel. Bore is .727 inch. I am thinking to ask a friend in the grinding business to make a reamer to ream just past the bulge and taper into bore over a few inches of run. And will strike off the bulge on the OD of barrel. Surely I will proof test and take before and after measurements to see ikf the barrel is expanding when fired. I will report here once that is done.