Sight over bore, also known as sight height, refers to the distance between the shooter’s eye and the barrel of the firearm when aiming down the sights. This distance can affect the alignment of the sights and the point of impact of the bullet, particularly at close ranges.
When aiming down the sights of a firearm, the shooter must align the front and rear sights with the target to ensure accurate placement of the bullet. However, the position of the shooter’s eye in relation to the barrel can affect this alignment, particularly at close ranges.
If the shooter’s eye is positioned directly above the barrel, the sights will be aligned with the barrel and the point of impact of the bullet. However, if the shooter’s eye is positioned to the side of the barrel, the sights will be offset from the barrel and the point of impact will be different than where the shooter is aiming.
This is particularly important when shooting at close ranges, as the distance between the shooter’s eye and the barrel can be relatively large compared to the distance to the target. In these situations, the shooter may need to adjust their point of aim to compensate for the sight height and ensure accurate placement of the bullet.
Sight height can vary depending on the type of firearm and the position of the shooter’s eye in relation to the stock or grip of the firearm. Shooters can measure their sight height by measuring the distance between the center of the bore and the center of the front sight, and then subtracting half the diameter of the bore.
