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In ranged weapons such as firearms and artillery pieces, the act of sighting in or sight-in is a preparatory or corrective calibration of the sights with the goal of having the projectile (e.g. bullet or shell) placed on a predictable impact position in relation to the sight picture.
With the rifle reassembled you should be able to put shots down range and make more fine-tuned adjustments. A drawback of using the naked eye to boresight is that it can be difficult due to the tunnel vision and lack of brightness, especially with longer-barreled guns.
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There is a device that is mounted on the rifle called a sight. While there are many forms of rifle sight, they all permit the shooter to set the angle between the bore of the rifle and the line of sight (LOS) to the target. Figure 2 illustrates the relationship between the LOS and bore angle. Figure 2: Illustration of a Rifle Showing Line of ...
The maximum range is an impressive 1,200 yards, which means it can do dual duty into rifle season or other distances far past bowhunting requirements. The main drawback with this range finder is cost.
On the other hand, a firearm with a short bore-to-sight distance will need less sight adjustment when changing between targets at close ranges. At longer ranges the bore-to-sight distance will be of less importance, since gravity has affected the projectile so much that the height difference between the bore axis and the sight axis has far less ...
A Leupold telescopic sight mounted on a dovetailed rifle receiver via two scope rings From left: A sketch of a cross section on a Zeiss rail and ring mount, both with a Picatinny rail interface. Scope mounts are rigid implements used to attach (typically) a telescopic sight or other types of optical sights onto a firearm .
A gun is "traversed" (rotated in a horizontal plane) to align it with the target, and "elevated" (moved in the vertical plane) to range it to the target. Gun laying may be for direct fire, where the layer sees the target, or indirect fire, where the target may not be visible from the gun. Gun laying has sometimes been called "training the gun".