Double R,
You're not alone. I just missed a buck at 50 yards this evening. I was feeling miserable about myself, logged onto the computer, and found this thread. You can bet I'm gonna be checking that scope out on the range tomorrow to make sure it wasn't knocked out of alignment, but I have a feeling it was me that missed. I feel for you. Thankfully, our season is just starting, so I should have another chance to rectify it.
Duane