Doesn't appear to be the factory contour on the barrel at the frame junction or in the forward area of the ejector shroud. But then that scope mount is way over anything I have even seen to. Lot of metal there. Probably really cuts down on recoil and the scope mount sure isn't going anywhere. I have 2 629-1 and neither look like that. BTW I have a 6" and a 8 3/8" barrel in my parts pile if it really bothers you. I removed them from mine. One I replaced with a 4" barrel ant the other got a 5" 45 barrel and the cylinder reamed to 45 colt