I have a standard contour BHW 20" barrel. Sub moa when cold but after 20 rounds POI shifts high and left up to 9 MOA. Once barrel cools POI returns to zero. I shoot Hornady Frontier 55gr and 68gr match. POI shift is half with the 68gr match. Rifle was built for 3Gun.
Any thoughts on the POI shift? Barrel not properly stress relieved?
Last Edit: May 6, 2019 6:27:42 GMT -8 by GLSHOOTER