What are you going to hunt with it? I have a Rem 700 in 30-06 and it also seems to be less accurate with 180gr bullets, but with 150's its a tac driver. This past summer I was hitting woodchucks out at 250 yards with a 3-9x50 on top. The 150's hammer whitetails and will even work well on heavier animals like black bear, caribou, and even elk.