I did 62 grains of imr 7828. I think max load for 150 berger with imr7828 is 62.9 grains. this is from berger manual.
will see how they shoot this weekend and report back.
Just a follow up report for those interested in this combo. I ended up with 67.5 gr of H1000, then did seating depth testing per Berger's recommendations, ended up at .080 off the lands. Confirmed the load on 3 separate trips to the range, repeatable 1/2" or less groups at 100 yds.