Yes, I tried Varget and 178 ELDX, did a 400 yd ladder test 42.0 to 45.0 grns. Got ok accuracy (1.25 moa) but the SMK performed much better. Was hoping to stick with the SMK but I want constant killing performance on deer. The most accurate hunting bullet so far for this rifle is Nosler 165 BT and Varget at 2750 fps. Guess I'll stick with that load.
Looks like you have your answer.
edit: If want to further tweak the 178 ELD-X load, go back to the best powder charge, and experiment with jumping the bullet farther.
.005"
.010"
.015"
.020"
ect.