I'm going to second, third and fourth sensop's advice to get a good reloading book if you don't have one.
If I were to choose one powder to use for the two cals you mentioned, it would be IMR 4895. I have found that powder to be very versatile in both small (22-250) and medium large volume cases (270Win/30-06). Will it be the best one for all loads? No, but it will get you some pretty good and accurate loads.
|