I sent my 586 no dash in to the performance center for an action job, and the "M" fix on forcing cone. They came back with the barrel needs to be replaced because it's jammed or something. So I said do it. Got it back and I'm wondering about the small gap on top where the barrel meets the frame on the sighting area and to the right and left. Doesn't look real bad, but none of my 15 or 16 revolvers from the 1950s to ones made 6 years ago have any gap. I can get up to about a .010" feeler gage in there, but it only goes in a 1/16 or so. I don't know if it is typical or just normal. Any others have new barrels from the factory on older revolvers with similar, or is there a normal range for the gap? Thanks.