need help: I shoot an apex, it has been great in the past, now i am having a wanderng zero. it is topped with aVeri x II in 3-9x40. it holds its groups but the next on may be off by 8 or more inches at 50 yards. i have missed 2 so far this year with it and just bairly clipped the leg on another. did get it right the first time out this year and ended up with a large button buck. am i thinking right that it may be the weaver rings or rails?
help!