So my S&W revolver needs a new barrel because some idiot down the line tried to put a K frame barrel on the N frame I now own. My Smith game me some options and I’m trying to figure out what the best barrel option would be. I already have a 158grn SWC hollow point mold and plan on shooting those over H110 and some wadcutter a over W231. What twist rate do y’all think would be best, most of what I can find on the Internet is 1 in 16 to 1 in 18. He is leaning towards buying and cutting a green mountain blank with 1 in 20 twist. In all fairness I don’t think he saw the 1 in 20 twist on the barrel blank. Also, keep in mind I’m going to end up what ever the choice is with a 6” barrel. I’m trying to get the most accurate gun I can out of this thing and I’m not trying to be too cheap about it lol.