I will go along with the others that said H4831 (I prefer short cut) is the powder of choice for the .270. It works exceptionally well with 130s-150s and is certainly a good place to start. I have had good luck with other powders, notabley RL19, RL22, IMR 4831, Ramshot Hunter, and Accurate Magpro. Never tried RL15 as I think it is a bit fast for anything but light bullets in the .270.
Lou
