22 Savage
I don't know your experience or shooting style, so what I say may not relate to you if you are an experienced bench shooter.
Realize when you are talking 100 yd. groops <"1.0 the load is only one of many variables. Your consistent cheek weld, movement between shots, comfort in the shooting position, adequate hydration, and a host of other factors will be as important as the load you are using.
I'm not saying don't tweak the load, I'm saying don't blame the load unless everything else is held the same.
Wayne the Shrink