My old 300 WSM was pretty good with H4831 and 200 PTs but for some reason I have had a lot of luck with 165 ABs and RL19.
The same load works well in my buddies 300 WSM EW.
19 and 180 ABs were real decent as well.
I have a buddy that uses a Tikka with H4350 and 180 TTSXs that is also another great shooting load.