The wonderful 30cal bore allows you to use a wide variety of powders that work.The big case helps too.You can put a lot of the slow burn rate powders and get some really good velocities with them.I've always had good luck with the powders in the 4350 burn range in the 300 Win Mag,but really I've done well with powders all the way up to Ramshot Magnum.I just recently tried Ramshot Hunter for the first time in my 300 Win Mag.These are two of my test loads.I can probably tweek the seating on these loads and get them tighter,but they weren't too bad and the velocity was good.I think this powder is worth playing with some more.
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~Molɔ̀ːn Labé Skýla~
As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............