I couldn't understand why I had erratic accuracy while shooting my Cooper at the bench. Turned out the Triad Cheek rest straps on the bottom of my stock were interfering during recoil. When I opened the straps, off the rear rest, accuracy returned. They caused the groups to increase from .25MOA to .75-1.0MOA. I think the issue is that I was using a pretty firm, rabbit ear bag and the straps were shifting point of aim. Anyone else experience this?