I have a Ruger 270WSM and I bought a Leupold VXII and when I went to sight it in it shot to the left. I kept adjusting it and never could get it to move right so I returned it and bought a Nikon Buckmaster. It shot great for a little while and then I started having the same problem with it. I had to remove the scope and bore site it and then it worked for a while and now I am having the same problem. Any answers??