When I was working through some loads for mine, I found the following powders worked great, H-4350, IMR-4831, H-4831, RL-19 & 22, Accurate 4350 & 3100, and Ramshot Hunter.
I finally settled the argument and went with the Ramshot Hunter, and a 130gr load. This load would hit the best velocity with awesome groups and with the 130gr SST will flat out roll a deer or hog out to 300yds.
With the 150's it was basically a toss up with the top mentioned powders. They all shot very well, and most produced good velocities. Overall the differences would not be very much and would probably be up to the rifle deciding the end result. With my particular rifle, it seems to digest anything I put into it, making finding a good load more a matter of which powders I have the most of on hand.