Thanks guys, I appreciate the help. The scope has side parallax adj. and it's the first thing I check. I have checked bedding and scope and may have found an area to look at. This factory barrel required forearm pressure to shoot and that may be the problem. I have re bedded the pressure pad section with 8# and will shoot it this weekend to see if that was the problem. Other than that, my guess would be that this barrel is sensitive to just a little temp swing.