I have a 12ga Fox cromox steel barrel with slight bulge about 5" ahead of the back end. In other words 2 inches ahead of front of the chamber and forcingcone. Bulge measures .017 inch more than the bore diameter in that area. Ribs still look tight and barrel rings. Looking in the bore , bulge (dark spot) is only on the side of barrel farthest from center rib. Bore is perfect on side closest to center rib. In other words the bulge is not all around the circumference. The barrel outside surface can be filed to contour and reblue but what options do I have to open the bore in that area so bulge can't be seen? My Skeets shows the bulge is .017 above bore diameter but that's only on one side. Bore probably has to be opened at least twice that to clean up the ring bulge.? Ideas please. Thanking you.
