I finally got around to posting about my Ruger 10/22 scope.   I ordered a Bushnell Banner Dusk & Dawn 6-18×50 scope because I already had one on my Marlin 17 and liked it really well.  The scope was clear, easy to see through and had kept its zero for a few years.  The scope came in, I mounted it up and shot it a few times then put it away.  I finally got back around to playing with it and noticed something was wrong.  I...