this is my first post on this sight. I just built a 7mm WSM 26" barrel, 1-9.5 twist. I am loading 162 SST with 58 grains of H4350 powder, large rifle primer. Are there better powders or bullets for my gun. I'm starting out so i grabbed the first thing that i saw. I would like to shoot sub .5 groups but haven't been able to with this load. Any thoughts?