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I am awfully close to improving mine Ackley style the way I recommended you do your '06 back when you first started asking about it.And another part of the "reasoning" behind choosing the 180gr bullet in an '06. (Sorry, Jamie, I just couldn't resist!) The 147-150gr class of bullet is pretty short in a .30 cal and while it can be blazing fast at the muzzle, it sheds that speed pretty quickly.
IF I were shooting a .270, a round that I have a lot of respect for, I'd likely be shooting a 150gr bullet, and like normal, I'd be pushing it as hard as I safely could. That case has enough capacity to make that bullet move out and that weight/diameter bullet should hang onto it's velocity for a long time.
I have a friend with a .270AI and it pushes 150gr slugs at 3100+FPS. It shoots VERY flat with Nosler LRABs in it.
The 150gr .270 bullet is the ballistic twin of the 180gr .308 bullet, in terms of SD and BC. They are VERY close.