At the range last week trying a new scope, I sighted in then moved to 300 and started noticing patterns and not groups. I checked the scope and it was secure BUT there is what looks like the thickness on a sheet of note book paper "play" between the upper & lower on my Armalite AR-10 .
I didn't notice this two weeks ago ?? Any thoughts or suggestions ?
I didn't notice this two weeks ago ?? Any thoughts or suggestions ?