IMR4831 55-56gr with various 140's has been a solid performer.

IMR7828ssc with 150gr and heavier.

RL19 and RL22 were both accurate but not very fast for me compared to other powders.

Don't give up on the load you are using. I just think that you are way too close to the lands for that rifle. The Accubonds act like monometals in some rifles and like a decent jump into the lands. I have two rifles that show this. One is at .086" off due to magazine length, the other is at .084" because it shoots the best there. Both rifles are consistent 1" and under shooters for me and have shot several 3-shot groups in the .3's.

I would back them off to at least .030" to start with.

This is God's universe, and he has a plan. You might think that you have aa better plan, but you don't have a universe.