Look through the scope at a blank background (like a white wall or clear sky). Turn the eyepiece until the reticle is crisp and sharp. Do this quickly to prevent eye fatigue.
Look through the scope at a plain, light-colored wall or the open sky.
At 25 yards, look through the barrel (bolt removed) at a target, then adjust the scope turrets until the reticle aligns with the target.
( The "EG" designation often denotes a 3rd party or budget-line illuminated reticle optic, which may not be a genuine Bushnell-branded product. This guide focuses on the universal operation of such a scope based on typical 3-9x40 specifications and EG-style red/green illumination systems.) Bushnell 3-9x40EG Illuminated Reticle Scope Manual & Guide Bushnell 3-9x40EG
Located within the illumination dial (typically a CR2032 lithium battery). 2. Mounting Your 3-9x40EG Scope Proper mounting is essential for accuracy.
The lens closest to your eye. It features a fast-focus diopter ring to sharpen the reticle.