Description
Rifle Scope Product Details
DONGYUCHUN Rifle Scope 2-820 Rifle Scope with Base Adjustable up and Down
material: metal
Multiple: 2-8 times
Length: 18CM/7.09 inches
Adjustment: downhill, left and right adjustable
Products: scope, battery, dust cover
Rifle Scope Product Features
Scope with red/green light
Adjustable up and down, left and right
Length 18CM/7.09 inches, with integrated Z bracket base
2-8 times adjustable
If you have any questions, please contact us, we will reply you within 24 hours
About the DONGYUCHUN Brand
DONGYUCHUN is a premium maker for firearm scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They create and build their mounts and related products choosing elements which are resilient and long lasting. This includes the DONGYUCHUN Rifle Scope 2-820 Rifle Scope with Base Adjustable up and Down by DONGYUCHUN. For additional shooting goods, visit their website.
All About Rifle Glass
Rifle scopes allow you to exactly aim a rifle at various targets by lining up your eye with the target at range. They accomplish this through magnifying the target by utilizing a set of lenses within the scope. The scope’s positioning can be adapted for consideration of varied natural elements like wind and elevation to make up for bullet drop.
The scope’s purpose is to help shooters understand exactly where the bullet will land based on the sight picture you are viewing using the scope as you align the scope’s crosshair or reticle with the intended target. Many modern rifle scopes have around eleven parts which are located inside and outside of the scope. These optic pieces include the rifle scope’s body, lenses, adjustment turrets or dials, objective focus rings, and other components. Learn about the eleven parts of glass.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Choosing the best type of rifle scope is based around what type of shooting you plan to do.
First Focal Plane Optic Facts
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These styles of scopes are useful for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where calculations are minor
- Experienced shooters who understand their target “hold over” as well as “lead” correlations for their long gun
- Shooters who don’t mind the reticle is enlarged and takes up more visual eyesight room than a SFP reticle
Second Focal Plane Glass
Second focal plane scopes (SFP) include the reticle behind the magnification lens. This causes the reticle to remain at the same size in relation to the level of magnification being used. The result is that the reticle measurements alter based upon the zoom chosen to shoot over greater distances due to the fact that the reticle measurements represent distinct increments which differ with the magnification level. In the FFP illustration with the SFP optic, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement. These particular varieties of scopes work for:
- Far away types of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots occur within much shorter distances and ranges
- Shooters who would like a clearer optic sight picture without area used up by the larger size FFP reticle
About Rifle Scope Zoom
The amount of scope magnification you need on your scope is based on the type of shooting you choose to do. Just about every kind of rifle optic supplies some level of magnification. The quantity of zoom a scope gives is identified by the size, density, and curvatures of the lens glass inside of the rifle scope. The magnification level of the scope is the “power” of the scope. This denotes what the shooter is observing through the scope is amplified times the power factor of what can typically be seen by human eyes.
About Single Power Lens Scopes
A single power rifle optic uses a zoom number designator like 4×32. This indicates the magnification power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of optic can not fluctuate considering that it is a fixed power optic.
Variable Power Lens Rifle Scopes
Variable power rifle scopes can be changed between magnification levels. It will note the magnification amount in a configuration like 2-10×32. These numbers mean the zoom of the scope can be changed between 2x and 10x power. This also involves the powers in-between 2 and 10. The power manipulation is achieved by working with the power ring component of the scope near the back of the scope by the eye bell.
The Power and Range Correlation of Rifle Glass
Here are some advised scope powers and the ranges where they could be effectively used. High power rifle scope glass will not be as useful as lower magnification optics considering that too much zoom can be a bad thing. The same idea goes for extended distances where the shooter needs to have enough power to see where to best aim the rifle.
Lens Covering for Rifle Glass
All modern-day rifle scope and optic lenses are covered. Lens finishing is a vital aspect of a rifle when thinking about high end rifle optics and scope setups.
HD Versus ED Optic Lens Coatings
Some scope suppliers also use “HD” or high-def glass coatings which use various procedures, rare earth compounds, aspects, and polarizations to draw out numerous colors and viewable definition through lenses. This high-definition finishing is frequently used with greater density glass which brings down light’s ability to refract through the lens glass. Some scope manufacturers use “HD” to describe “ED” meaning extra-low dispersion glass. ED deals with how certain colors are represented on the chromatic spectrum and the chromatic deviance or aberration which is also called color distortion or fringing. Chromatic aberration may be noticeable around objects with hard shapes as light hits the object from various angles.
Single Coating Versus Multi-Coating for Rifle Optics
Different optic lenses can also have various coatings used to them. All lenses generally have at least some type of treatment or covering applied to them before being used in a rifle scope or optic.
Single layered lenses have a treatment applied to them which is typically a protective and improving multi-purpose treatment. This lens treatment can preserve the lens from scratches while reducing glare and other less helpful things experienced in the shooting environment while sighting in with the optic. The quality of a single layered lens depends on the scope designer and how much money you paid for it. The scope’s maker and cost are indicators of the lens quality.
Some scope makers also make it a point to specify if their optic lenses are covered or “multi” covered. This implies the lens has several treatments applied to them. If a lens gets numerous treatments, it can show that a manufacturer is taking numerous actions to combat different environmental aspects like an anti-glare covering, a scratch resistant anti-abrasion finishing, followed by a hydrophilic covering. This also does not always mean the multi-coated lens is much better than a single covered lens. Being “better” depends upon the maker’s lens treatment technology and the quality of components used in constructing the rifle glass.
Hydrophobic Lens Coatings
Water on a scope’s lens does not help with maintaining a clear sight picture through a scope at all. Many top of the line or high-end scope manufacturers will coat their lenses with a hydrophobic or hydrophilic coating. The Steiner Optics Nano-Protection is a fine example of this type of treatment. It deals with the exterior of the Steiner scope lens so the water molecules can not bind to it or develop surface tension. The outcome is that the water beads roll off of the scope to maintain a clear, water free sight picture.
Optic Installation Options
Installing approaches for scopes come in a couple of options. There are the standard scope rings which are separately installed to the optic and one-piece scope mounts which cradle the scope. These various kinds of mounts also generally are made in quick release versions which use throw levers which allow rifle shooters to quickly install and remove the scope.
Scope Mounts with Hex Key Rings
Normal, clamp style mounting scope rings use hex head screws to mount to the flattop style Picatinny scope mount rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are often made from 7075 T6 billet aluminum which is designed for long distance accuracy shooting. This type of scope install is wonderful for rifles which need a long lasting, rock solid mount which will not move no matter how much the scope is moved or abused.
Rifle Scope Mounts with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to rapidly take off a scope and connect it to a different rifle. Numerous scopes can even be swapped out if they all use a similar design mount. These types of mounts are handy for long guns which are transported a lot, to swap out the optic from the rifle for protecting the scope, or for optics which are used between numerous rifles.
Sealing and Gas Purging for Scope Tubes
Wetness inside your rifle scope can ruin a day of shooting and your pricey optic by triggering fogging and producing residue inside of the scope tube. Most scopes prevent wetness from entering the scope tube with a system of sealing O-rings which are water resistant.
Glass Gas Purging
Another component of avoiding the buildup of wetness within the rifle scope’s tube is filling the tube with a gas like nitrogen. Since this area is currently taken up by the gas, the glass is less influenced by climate alterations and pressure variations from the outdoor environment which could potentially allow water vapor to leak in around the seals to fill the void which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
