I had my scope put on for my bymy local shop. We got to talking and such as he was finishing up. It was my fault as much as his I should have left him alone to do the work. Soooo. I got to the range ready for a tack driver. Instead my gun started putting shots to the left real bad. I'd crank the scope adjustments to the right and it would shoot left. Finally I realized that the scope rings weren't tightened down. I cranked em' down on the spot (good thing I had my gear bag with me) and haven't had a problem since. We all make mistakes so it's no big deal. That's why we go to the range to sight our rifles in and don't just go to the woods right afterhaving them bore sighted. I'd check your scope rings and mounts to make sure they are tight. If that's not it break down the gun and put it back together making sure everything is tight.