Hi, I have had a push-feed M70 in .30-06 for a number of years. Unfortunately I won't be a lot of help on loads as it tends to shoot about any handload well - terrible problem to have. I seat jacketed bullets to where they are 0.020" shy of the rifling and all seem to do OK.
For hunting I favor a 165gr. Partition. Powers used have included 4350, 4064, and Varget (current choice). All have worked fine using the loading manual recommendations.
A real nice cast load is a 170gr. cast bullet, gas checked, seated to contact the rifling, and 12 grains of Blue Dot. For 150 gr. bullets Marshall recommends 15 grains of Blue Dot, although I have not tried that. The 170 gr. bullet hits right where the crosshairs go from 'thick' to 'thin' on the bottom post, range 25 yards. Nice! Scope is a Leupold VX-III 2.5x8.