Mark,
While we are discussing the 190 Hornady, it was my absolute favorite bullet in the '06.
From my notes circa 1995, I pushed it to 2800 with IMR and H 4831 in a 22 inch standard '06. It gave me great accuracy from a bone stock Win 670.
I also played with the AI '06 for a couple years in the early nineties. I did not have a Chrony yet so I could judge velocity only from observed trajectory numbers. And the rifle (an old H&R 308 barrel screwed onto a Venezuelan tanker carbine Mauser built for 7x57 with the mag box lengthened a 1/4 inch) was so inaccurate that trajectories were unmeasurable.
I came to the same conclusions as already shared by our more knowledgeable compatriots: the '06AI is a waste of time with bullets lighter that 180 gr.
But I think it would really shine with that Hornady 190 or any 200 gr spitzer boat tail.
I would have the mag box built to 300 Wea length and and the chamber reamed so that I could seat the bullet as long as good handloading practices would allow.
