Got my new GT Laser II's and my scope dialed in. WOW! They fly great... Don't want to shoot at the same spot twice without retrieving your arrows. It is spot on at 20 & 30. A little off at 40yrds but still not enough to worry about. Every shot @ 40 would've been well within the "zone". I am so glad I took the advice and bought these. Now I can't wait till hunting season! Thanks for the great advice!