I am new to this forum but have been a fan of it for some time now. I recently, after many years of talking myself out of it, purchased a clark custom 10/22. I bought what I thought was an excellant scope for it but noticed that when I got it home (Pentax 3x-15x) I could not take advantage of the 15x at distances less than 40 yards or so. Any time I cranked the power, it would get blurry. Any suggestions on a new purchase? I'll put that scope on a different rifle, I dont want the low end to be more that 4x. Aslo could someone explain how the AO feature works. What will I see when i turn the knob. Thanks.