Re: Reticle off centered?
Try this:
Set up a tall piece of paper at 100yrds, I use a big silhouette target reversed on the backer. Draw a vertical line with a sharpie and a 4' level, and put a target dot at the bottom of you line. Zero the rifle, level the crosshairs to the line, and put one shot on the dot. Dial up your elevation one complete turn, and put another on the dot. Dial up another turn, shoot again. Your shots should be on the line you drew, and should measure what ever 1 turn of your turret value is apart. My VXIII is 15" per turn. If your tracking off the line, you need to rotate the scope in the rings until your bore centerline intersects the scope centerline.
Good luck!