I don't really play CSGO anymore, my sensitivity there was 1, but I never used scoped rifles. What I've done is convert CSGO sensitivity to Battlefield 1 using vfov 74 and viewspeed 2, I then inputed all the calculated values of various zoom levels into the config file. I tested it and they feel nice, the aim transfers well. Now I'd like the same for Insurgency but there's no Ironsight sensitivity scale on this site.