What does height over bore mean?
Height over bore is a term that is used to describe the difference between the two parallel axis, specifically the barrel of a rifle and the shooter’s line of sight through their optics or iron sights.
What is the sight height of an AR 15?
The mount height itself, that is the distance from the top of rail to center of scope, varies, but typically lies around 36–38 mm (1.4–1.5 in) (higher and lower mounts are also readily available). In total, this gives a typical scoped AR-style rifle a height over bore of around 67–69 mm (2.6–2.7 in).
How is scope height measured?
To get a rough measurement of the scope height, just take the scope’s objective lens diameter (usually measured in millimeters), add 2-4mm depending on the thickness of the scope’s body, and divide the result by two to estimate the scope height.
How high should your scope be off the barrel?
Here is the reply from Nightforce: Our recommendation is no less than 1/8th of an inch of clearance between the bottom of the objective and the top of the barrel. Your second choice (0.160) [for scope base height] will give you enough clearance.
What height rings for an AR?
The ideal range is 0.625” – 0.25” (Again, not relevant of you have an adjustable cheek piece or a flattop rifle such as Ruger RPR, AR15, or AR10). If you are trying to keep the scope low while using a 20, 30, or 40 MOA scope rail/base, you will need extra clearance.
What is offset on a gun?
What is Sight Offset? Mechanical offset refers to the distance between the center bore of the gun’s barrel and the sights or optics you use to aim. This distance is different based on the type of firearm that you are using.
What is bore offset?
Mechanical offset refers to the distance between the center bore of the gun’s barrel and the sights or optics you use to aim. This distance is different based on the type of firearm that you are using. With rifles, the sight offset usually sits around one to three inches whereas handguns stay at fractions of an inch.
Why do hunters pattern shotguns?
In addition to the firing characteristics of the gun, the gun’s choke, the brand of shotshell, the shot size, and the type of shot also affect the pattern. In order to select ammunition that provides the best performance, it’s necessary to “pattern” your shotgun.