I tried 10 different loads with that bulet and could only get reasonable groups at 25 yards but they all went to hell at longer ranges for me. I ran it from 800fpr to 1450fps and it uniformly sucked! I think the meplat is too large for the length of the bullet, it does not stabilize well.

Stick with 375gr bullets and up and the loads are a lot easier to get to shoot well...