I have a 30-inch barrel pre-64 Winchester .30-06 target rifle which gets respectable relocities out of 155-gr Palma, 168-gr SMK, and the 180s and 190s. I don't see the need to try to push any of them to an extra 100 or 200 fps, because it makes no real difference in the ability to hit a target at long range, and the cost is reduced accuracy, more recoil and more wear and tear on the rifle.
