I agree with Chuck's metalurgy. Looks to me like you will be removing .034" diameter on the inside and 0.034" diameter metal on the outside; meaning you will remove 0.068" of wall thickness. And, it looks to me like you have 0.094" (0.915" - 0.727" = 0.094") total thickness which means you have 0.047" walls (0.094" / 2). Obviously, removing 0.068" from 0.047" doesn't work. Guys, I will be first to say, "Check my math - I have been known to make nisteaks."
I doubt a metal defect for cause of a ring bulge. I'd bet on an obstruction. I'd also bet on the bulge not growing or failing. BUT, I'D INSIST ON A CHECK UP BY A BARREL MAN!!!!
R'Man;
I find it extremely hard to believe you did this. Obviously 0.915"-0.727" = 0.188" which assuming symentry = 0.094" ""Wall"". Also as the bulge measures .017" the .034" is going to be on the Diameter, you need .017 off the wall both inside & out so actual wall reduction is going to be 0.034" not 0.078". Remaining wall would thus be 0.060". Personally I would think it more advisable to shoot as is rather than taking even this much metal off it.
