I've had good loads with both powders. With Imr 4350, 59grs shoot under half inch for me, and with Imr 4064 52grs is same or close to it. As always, start lower and work up. Also the 150gr accubond is all I've used the last 3 seasons, and has performed very close to the partition of same weight while shooting slightly better group wise in my rifles. And that was using noslers 2nds. I think I'll keep them!