OK guys, I'm coming to the experts here for some information/consolation. Go to a local gunshow today and find a 686-4 6"bbl revolver with box and papers in like new condition, can tell it has been shot very little. Look it over with a fine tooth comb, I thought. Got home and start admiring, and I notice that there is a slight gap between the barrel lug and the frame. Looking a little closer, I see that there is also a very slight gap all the way around between the barrel and the frame. Is this a serious problem? I quickly look at the rest of my Smith revolvers, and some have a slight gap between the lug and the frame, but none of them have the gap all the way around the barrel. What say you? Do you think I have a problem? Thanks for any opinions.