It really depends on your range limitations. I've used 165gr BT and 180 gr PT. My buddy uses 165gr PT for everything including elk. Our range limitations are pretty low though with these loads. Around 200 yards for elk and 300 for deer.
Hunting large northern whitetail and taking any angle shots including shoulder bone would suggest 150-165 AB or BT. The accubonds have never let me down even quartering on one with a live weight of over 250#