I have a 629-4, Mtn. Gun, one of the older Smith and Wesson Mountain guns. I have never carried it in the mountains though. I do carry another four inch barreled 629 under my bino harness when bowhunting, but it is a production run 629-6 I believe. It stays loaded with 240 grain hard cast bullets in front of 23.5 grains of Hodgdon H110. I keep hearing a lot about QC issues in this latest run of Mountain Guns that was released by Lipsey’s this summer. I wouldn’t have any issue buying one, but I think I would want to see the actual gun in person though, and inspect the fit and finish instead of buying online where they just provide a stock photo of the gun.