Bugger,
I'm getting about the same velocities as bwinters in a Sako , 24" barrel and use H4350 and with Noslers ballistic tips except I use 61 grs for the 150's and they run around 3100 fps.
Some of those velocities can be beat with a good chambered custom barrel depending on the length. Read what mule deer posted again. Superformance is an interesting powder to try along with Ramshot hunter.
There was a thread on taking the 30-06 to 65000 psi on another forum some years back and was an interesting read. I believe the pressure testing was done by a guy that worked for a large powder company..
