For me THE powder for the 270 is IMR4831. BUT there are many other good powders avalible. Try a few and find
what your barrel likes, what
WE like makes no difference at all. Let your barrel tell you what it likes.
After much shooting, I dedicate powders to calibers, 4350 for the '06, 4320 for the '08, H380 for the 22-250, 4064 for the 8MM, 4350 for the 243, AA1680 in the Maximum, 4227 in the 357 Herrett, H322 in the 223, RL15 in the 35 Whelen, WW748 in the 30-30, RL7 in the 375win, 3031 in the 38-55, 4198 in the 45-70 ETC.
YES I load for them all, (Plus some more!!) been doing so for over thirty years now.
CW