Re: 300 WSM suggestion
If I was starting new, I'd try the RL17, a lot of folks have been posting incredible results from it.
I use H4350 with 180gr+ and Varget with 165 and less.
Why even buy any factory loads, pick up some powder and the bullets you want to hunt with and break it in with a potential load. If it shoots good, you're set until after the season.
If some is good and more is better, then too much is just right.
My mind is a raging torrent, flooded with rivulets of thought, cascading into a waterfall of creative alternatives