I use 42 grains of WW-748 with a 150 grain bullet in my Savage 99s in 300 Savage. With 180s, I use 41 grains of the same. My rifles have tolerated both loads, but I advise starting a bit lower with 180s. The 150 grain load goes around 2,500 fps and the 180 grain load goes 2,400 fps.
Other good 150 grain loads are 40 grains of either IMR 4985 or IMR 4064. These two are accuracy loads from Ken Waters. I think Waters also liked the 748 load.
I have used LEVERevolution in my 99s. In the 300, 44 grains with a 150 grain bullet goes over 2,600 fps, and 44.5 grains went around 2,700 fps, which is what Hornady claims for their factory load with that powder.
