Hodgdon has it at 64 grains max. and 2950.
As it happens H4350 and 180 Ballistic Tips and Accubonds is my load for my Kimber 300 WSM. Reason I mention that is I cant get anywhere near 64 grains, mine maxes out at 61 grains. I do get the 2950 fps though, with 3 grains less powder. Working up over a chronograph might not be a bad idea.