Yes, the Federal Blue box worked very good for me ! When I started reloading for my milsurps, I also decided to load for my hunting rifles and found it to be a hell of a lot more fun to see what I could coax out of them. From everything I have read on the magnum, the slowest powders give slightly less pressures but more velocity, so thats what I tend to lean to. I try to do test loads with about 4 to 6 different powders to see how the gun reacts and the results really differ from round to round. I still don't understand the logics behind how every rifle shoots differently, but they sure do. Load some, test them and then tell us what you noticed !