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Sight alignment is the process of lining up rear and front sights. The sight picture is the image you see when the sights are aligned correctly with the target. To ensure that the bullet will travel to the target in your sight, it’s necessary to sight-in your rifle. Before you can do that, you need to determine your dominant or “master” eye.

Open sight
With an open sight, you line up the target with the blade or bead of the front sight within the notch of the rear sight.
Aperture sight
With an aperture sight, you line up the target so that the front sight is within the rear peephole.
Telescopic sight with a crosshair reticle
With a telescopic sight with a crosshair reticle, you line up the target with the crosshairs of the sight.
Telescopic sight with a dot reticle
With a telescopic sight with a dot reticle, you line up the target with the dot of the sight. The dot must be centered.