I've said it in other posts but I absolutely love IMR 4895 in the 30-06. I've tried it with 150gr and 180 gr bullets with the 180s being my favorite. You could try IMR 4064 also. Reloader 19 might be a good powder too or even IMR 4320. Seems 4320 is somewhat available.
"...and that's the bottom line, because Big Yac said so."