Great minds do indeed think alike; my 'smith has a 6x57AI... although I must admit I'd thought of something even faster than your suggestions (put this down as a FIRST EVER!
) with a 6-06.
I shot a big fat 'chuck off a client's lawn with it from about 120 yards and even w/ the Weaver 6x I've whacked more than a few gallon milk jugs at 350+.
It has a slow-twisted barrel and favors 75s (the pic was shot w/ Hornady's 75 gr HP) but it does ok w/ 85 gr HPBTs & 90 gr NBTs. One thing I've been very surprised at is the performance of Ramshot Hunter in this cartridge. I thought it'd be too slow, but it delivers top velocities w/ heavier bullets and decent accuracy.
Being my first wildcat, I've locked the bolt a couple of times working up loads w/ RL15 but Hunter gives higher velocities and a lot less pressure.
Thanks for the compliments Mark!
