I have been loading for these two calibers for a lot of years and have some pretty satisfying loads for 150,165, and 180 grain bullets. Now, there are a lot more new powders and projectiles. Are the newer products any better? Do I stand to gain any velocity with all the new higher priced products or can you see any visible results in performance on deer sized game? I would appreciate all opoinions and load info on this subject. My usual loads consist of IMR 4350 and H4831 and I usually ignite them with a mag primer.