I have no 6.5x06 AI but do have two 6.5x06 guns. I mostly use the old standard H-4831 in my guns with the light bullets. I also use the old PO Ackley trick of slow pouring powder by funnel into a case while being vibrated. I get 3 grs more in the case than it will hold just poured, that way, to match PO's load data.
With the 140 I use IMR-4350 and can get up to 3,100 fps with slightly flat primers. But your AI version is not going to give you much better velocity, if at all, as the standard version comes within 100 fps of the 264 Win and the 264 has a pile more capacity than either the standard or the AI version.
Best of luck and if you want some real fun, try the 85 Sierra over H-322. H-322 can be used to replace HiVel#2 grain for grain. That 85 at 3800 fps is a small nuclear
device on prairie
poodles and other noxious critters. It is a red mist special.