Re: Rechambering my 30/06...No clue what to choose
I'd suggest a 24", 1:9" twist medium varmint weight barrel chambered in .280 Rem.
Hornady Superformance 139SST loads should anchor pretty much any of the non-dangerous game in North America, and handloaded bullet weights of between 150 and 168gr will stabilize and run supersonic to 1Kyd and somewhat beyond in handloads. I'm examining Noslers in these weights and they shoot well. There's no need to go with heavier .30's and tolerate their added recoil.
Beyond the barrel change no other mods are needed and it should feed precisely the same as the '06.
I am not a fan of the Ackleys; not because they don't work better, because they do.
My main point about the Ackleys is that for them to work better, they need to loaded up around max, or they don't deliver their expected better potential.
At a reduced load level, there's no point to having them, and especially not any reason for going out of one's way to do the work that allows the rifle to digest them.
I don't like max loads, and I especially don't like max loads in a cartridge that already has boosted performance. IMHO that's a perfect recipe for exactly what you don't want, a barrel burner.
Greg