I recently got a 3x9x40 mark AR for my(big surprise)AR15. I finally got to put some rounds down range and am rather disappointed. 3 power puts shots in one place and 9 power in another. I remember years ago my first scope was a tasco and had the same problem, sent it back and will never buy another. I may have to do the same for leupold. I am suspecting it may not even be holding zero as well. I haven't owned a ton of scopes, but man am I getting sick of it. I just wish I could $$fine these manufactures for all the ammo I have wasted determining these scope of the problem. Is this a common problem?