http://ezinearticles.com/?How-To-Zero-A-Ri...e&id=415018
Hope that helps. Make sure you shoot little groups before you start adjusting the scope. Start at 25y and than at larger distances. Being all over the place normally has two reasons: loose scope to rifle fit or you not doing your job (3rd is broken scope, but as it is new excluded) Cheers, Rene.