Didn't get to play around much with my new .300 Win this year before the scope went south. Right now I'm waiting on the scope to be returned. Before the scope wentbad, though,I was having very good luck with RL22. Accuracy was excellent with 165 gr. Ballistic Tips and Fed 215M's. When I get the scope back I'm going to start back withthe same powder and 180 gr. Sierra Matchkings.

I think 4831sc should be an excellent powder also. It works very well for me in my 7mm mag.You just gotta try different combos and see what works best in your rifle.