I recently bought a burris veracity 5x15 scope. It's mounted on a browning hells canyon speed in a .270 with leupold rings. I can't get the gun to group to save my life and when I adjust the elevation moa turret, the windage will always move at least 3 inches to the left without even touching that turret. This leads me to believe it is a scope issue. The groups are always in a big triangle pattern. Any ideas why the windage moves?