I actually rebarreled and re-chambered my Sako 75 25-06 into a 270 for broader versatility. As for powders, my 25-06 like H100V and RL-19. Great velocity and accuracy. My 270 now shoots 140 gr BTs at 3,000 (chrony'd) with H100V using Fed215's and 54 grs. powder. Start with those two, and use...