I use a Remington 700 USR .308 with a Nightforce 8.5 X 22 scope. Both are brand new. Here is the issue. As I look through the scope, at first, I have a nice visible reticle. After a couple of shots, it seems as though the reticle gets thinner to the point where the crosshairs are almost not visible. So far I have only shot in daylight, very sunn conditions. Has anyone heard of this? Or is an issue with me? Thanks