Well I have been looking to consolodate my powders into maybe one pistol powder and two rifle powders for long term supplies. My only criteria is that these have to be useful in as many cartridge types as possible. Let me know your selections Thanks Mule
Have a look at the handloader's bench, linked on the main menu. There are powder threads there that address this question in detail.
Power Pistol for pistols. Blc-2 for rifles. I'll second Ghrits answer although I'm biased. The HB has a lot of info and you should be able to find your answer there. Wish ya the best. Take care Be safe Poacher.