I never used the 150 in competition. My favorite accuracy load was 39 gr. of IMR 3031, 168 gr. Sierra HPBT bullet #2200, LC case, just about any standard LR primer. I used that load for 20 yrs. of 200 yd. match work with iron sights with VG results.
If I remember correctly (very long time ago) the US Army Marksmanship Unit used that load as well. I believe the velocity was about 2550 fps.
That was the standard for 300 meter free rifle match shooting for a very long time.
These days just use my Palma match load, 46 grains of Varget behind a 155 Sierra or Lapua Palma match bullet.
I have also used Hornday bullets in 155 grains but have not competed with them, I just use the Sierras mostly.
ICat
