I was out with my Bighorn today, also shooting low with the new loads. Had good grouping last puting, today was getting the sight set. It took a significant move of the rear sight to make a 4" adjustment up. It was initially almost at the halfway mark on the sight, ended up 3/4 of the way between the 4th and last large mark when I finished.
With Hornady 300grn at 50yds it hits about 2 1/2 inches above the top edge of the sight. At 100 it is right at the top edge. Tried some Powerbelt 338grn Platinums and there is only about 1/2 inch difference where they hit at 100yds, all using 110grns of 777.
Happy to have it hitting where it is, now if I can somehow get out to hunt.
(2 hrs and 45minutes from Federal Way up to the UW hospital this morning) uggh