The sighting plane on a shotgun refers to the imaginary line that connects the front sight, rear sight, and the shooter’s eye. When properly aligned, this sighting plane helps the shooter aim accurately at the target. Unlike rifles or handguns that have physical sights attached to the barrel, shotguns typically rely on a bead or fiber-optic sight at the front of the barrel. The alignment of this sight with the shooter’s eye and a consistent cheek weld on the stock determines the sighting plane.