I have a 270 win and am very happy with it and ammo is reasonably priced compared to many setups. That being said, now that CA is requiring lead free bullets, this changes the whole bullet mass / length / twist equation some. It makes the standard 270 sort of a 100 grain or less setup, and the -06 only a little better, so not different enough for me to think about an -06
I'm not sure I understand your 100 grain comment. The 270 Win with a Barnes 130 TTSX is an exceptional load.
With the addition of 300winmag, 7mm remmag, 8mm remmag, and 338 the choices are better. With winchester BC, 300wm and 280rem seemed good but it may not be the best.gun)I like the 270 and the 30-06 but the 280 dose stand out as much as the others. lets say you see a very very large buck at 500 yards and you have a choice out of these 3 witch one would you choose.gun)
As long as they were both dialed-in, I would feel just as comfortable shooting that big buck at 500, as if I were at 100, with whatever rifle I was most comfortable with. Even a .308 Win, because I know how dialed-in and accurate my .308 is.With the addition of 300winmag, 7mm remmag, 8mm remmag, and 338 the choices are better. With winchester BC, 300wm and 280rem seemed good but it may not be the best.gun)
Everybody , by law requires a 30/06...its a law.All others are options.