If you could get 1 powder, what would it be?

[Hickory]

Go to the Reloading Bench http://www.reloadbench.com and download their free reloading data log. It has everything you need. BTW, set up a tabbed notebook and keep all of your reloading information separate for each caliber. I know from experience that finding that load you remember as excellent is more difficult if you have to sort through 100 pages of mixed caliber information.