My favorite is WW748 and a 170 gr Hornady. I think it is 32 or 33 grns. (PLEASE DOUBLE CHECK)
I also load IMR4895 behind a Sierra 125HP for a friends young son. They like the load, I borrowed the gun and worked up the load for them. The gun was only shot at 50 yards, but put all the bullets thru one hole off a rest.
It has worked very well and shoots the best in my guns.
I tried some of the AA powders, 2230 and 2460 but did not like them in the 30-30.
Good luck,
CW