Sorry Boris, I`m with Dan on this one. I only use rifle scopes on all of my bows. I don`t run into parallax issues because I center my eye in the scope consistently. If I was shooting dots at 50 yards then it may be an issue. They are also a better scope (the ones I use) in every practical way other than cost. I do have the new Hawke crossbow scope on order and who knows, it may change my mind. I presently own a MAP and although it is a good scope the only things that bug me is the anti-reflective coating of the ocular lens is not to my liking and it`s light management is not as good as my Vari XIIIs. It is however an awesome scope for the money.