I played around with the 30-06 and the 190 ABLR in a pre 64 M70 a few months back. I tried Hunter, RL17, RL16, and RL26.

I settled on 55.5g of RL17. This shot just under an inch at 100 yds at 2,800 FPS. 55.5g of RL16 and 62.0g of RL26 were also right at 2,800 FPS, but groups were 1.5-2.0". I was hoping to go with RL16 for the temp stability, but it liked that powder the least.