Yes, Lupua seems to be the best and only in 30 06 now a days. But before buying 06 and shooting until it stretches to lenght, check the lenght of the 270. Still no Lupua but yes to Nosler or Norma.
Necking up .10"is less of an adjustment than the .20" down from 30 06. Other options are to get...
Have you considered a 280 rem or better the Improved? You would carry a lot less metal and still have 7 mag velocities . Recoil is same as an 0'6 with same bullet weight. That's a big plus after climbing a moutain only to kicked by an ultra lite, high power gun. Bullet selection is awesome and...