Went to range today for barrel break in 1 shot clean 1 shot clean 1 shot clean 3 shot clean 3 shot clean 3 shot clean 5 shot 5 shot clean ect. Shooting off bench and bipod at 100 yards after 50 yard bore sight/sight in. Rifle seems to prefer the 180gr pills over 150 gr, which makes sense because I ordered 1 in 10 twist in favor of heavys. My best groups by my measurement were .492 and .407" CTC. I'm pretty happy with that, especially at 15 degree weather and barrel still isn't broke in.