First time user to Long Range Hunting Forum.. Can someone mentor me in long range loads for 300win mag with Thompson Center 28" fluted barrel. I live and hunt elk in CO and I reload. Different powders for longer barrel? Suggestions on bullet size and powder combos. FPS? I've had luck with 165 balistic tips at about 3100.. Any and all suggestions would help. Thompson has only had trigger lightened. What would be next?