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How Does a Rifle Scope Work?

How Does a Rifle Scope Work?
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Have you ever wondered how a rifle scope works?  A rifle scope always helps to find and hit the target accurately. It’s an aiming device that can help you to decide where your bullet should hit.

It was said that a hunter can hit any of the targets with a mediocre rifle and a great scope. While you want to hit long-distance targets using a scope can make it easier. A rifle scope helps to align your rifle with the target you need to hit.

A great scope matters more than having a quality rifle that can increase shooting accuracy. You have to understand what type of shooting you’re going to do. In view of this, you have to choose the scope.

How Does a Rifle Scope Work?

The main objective of a scope is to magnify the target with more clarity than the naked eye. That doesn’t mean, you need costly scopes; instead, good cheap scopes also can give you a clear vision. You can easily find the best rifle scope without hampering your budget.

You just need to select a scope depending on the performance, firmness as well as aiming capability. Determining these factors, many manufacturers introduce many scopes at a low price.

Here we’ve gathered all the parts of the rifle scope that will make you understand this very finely-

Internal Parts of a Rifle Scope

You can see that the inside of a rifle scope works like a telescope if you notice. In front of it, you’ll see a lens from where the lights enter into the scope body. There is an ocular lens that focuses this light on your eyes.

The internal parts of a rifle scope can be separated into three main components-

○     Objective Lens Assembly

It transmits light from the objective lens to the ocular lens, and its diameter is measured in millimeters. If your objective is bigger, it’ll give more ambient light to the scope and your eye to clear the vision.

○     Focus Lens Assembly

By shifting the focus lens away from the objective lens, the focus lens corrects parallax error.

○     Erector Tube Assembly

This tube grabs the magnifying lenses along with reticle components. The erector tube contributes to forming an upright image.

Here are the other parts of the riflescope-

○     Windage/elevation

A spring system is employed in this system to prevent the erector tube from sliding backward on the screws. In the spring system, the erector tube is pushed against the adjustment screws when they are adjusted inward. By turning the screw outward, the tube will be moved by the spring system.

○     Magnification

In a variable power scope, the magnification power is modified as the power ring is turned by the magnifying lenses in the erector tube. When magnification is increased, this lens moves closer to the objective lens. The lens travels closer to the ocular lens as the magnification is reduced.

○      Reticle

There is a possibility that the reticle may be placed in front of or behind the magnifying lenses, depending on the manufacturer. A front focal plane (FFP) reticle is one type of assembly, whereas a second focal plane (SFP) reticle is another.

○     Lenses

Coated lenses are a great choice in a high-quality scope, but fully multi-coated lenses are the best ones. The coating comes in a variety of levels:

  • Coated: At least one layer of protection has been applied to one lens surface.
  • Fully Coated: The scope’s air-to-glass lenses are all coated with a single layer.
  • Multi-Coated: Every air-to-glass lens has at least one coat.
  • Fully Multi-Coated: All the air to glass lenses in this scope have many layers of coating.

External Parts of a Rifle Scope

A long-range scope is available in many sizes, shapes, and features. They feature variable reticles, weights, and settings depending on your goal.

○     Scope Tube

The lenses are held in place by the scope body, which is a metal or aluminum tube. The most popular scope tube diameters are one-inch, 30 mm, and 34 mm. Long-range shooting and hunting become much easier with the larger tube, which allows for greater elevation and windage adjustments. Rain, as well as moisture, won’t get in and fog the lenses since the interior tube has been purged and sealed.

○     Adjustable Objective (AO)/Parallax Adjustment

The position of this Adjustable Objective is on the side of the scope body. It modifies the adjustable objective lenses to rectify the parallax error. An AO is a dial or ring placed around the objective bell or knob. In the left-hand corners of the turret housing, you’ll see it. This is a beneficial thing when you require a light scope with which you can shoot at a long distance.

○     Eyepiece/Diopter

The eyepiece or diopter can be adjusted for reticle focus with which you can view sharp images, and it holds the ocular lens. After setting the scope up, you need to set the eyepiece focus. This very function is essential for older shooters. Not every rifle has this function, but the best scopes have a locking diopter.

○     The Ocular Lens

This lens is smaller than the objective lens, which magnifies the lights from the focal point. It focuses the light that comes from the other end of the scope to your eyes.

○     Exit Pupil

Essentially, the exit pupil is the width of the light beams coming out of the eyepiece. You can measure this in millimeters. Your images will be more bright if you choose the larger exit pupil. It works better under low light conditions. You can calculate the exit pupil size by dividing the objective lens size by the power of the magnification.

Wrapping Up

The major design of a rifle scope didn’t change in the last few centuries. The evolution of the scopes considers many things like technology, materials as well as advanced manufacturing methods. Some companies have introduced their optic technological advancements to build up satisfactory products.

Among them, some companies take those rifle scopes to an incredible level. A quality rifle scope depends on the optics and their coating play; this determines how you hit your target. If you choose a quality optical glass, then it can last for a lifetime, but you have to give nice care. You can also have a look at related fastest crossbow,  the best crossbowbest crossbow under 1000best crossbow under 500, and best crossbow for deer hunting articles.