How to Zero Scope Turrets The turrets on your scope—those things you use to align the reticle with the point of impact—have numbered markings around their circumference. They’re there for a reason; they allow you to make in-field corrections for trajectory and wind, and they allow you to mark your zero so you can always go back to it. After sighting in your rifle, it’s critical that you set the elevation and windage turrets to zero. That way, when you need to make a correction while on the range