Description
Rifle Scope Product Details
DONGYUCHUN Scope, Cross Tactical Rifle Scope, 9X Tactical Hunting Rifle, Scope,40
Size:40
material: metal
Magnification: 3-9 times
Adjustment method: manual adjustment
Objective lens thickness: 32mm / 40mm
Lens: blue film
Products include: scope, dust cover, special screwdriver, bracket
Rifle Scope Product Features
About this item
material: metal
Magnification: 3-9 times
Adjustment method: manual adjustment
Objective lens thickness: 32mm/40mm
Lens: blue film
About the DONGYUCHUN Manufacturer
DONGYUCHUN is a premium company for rifle scopes, optics, mounts, and other components used for firearms like rifles and long guns. They create and manufacture their scopes, mounts, and related products working with elements which are long lasting and resilient. This includes the DONGYUCHUN Scope, Cross Tactical Rifle Scope, 9X Tactical Hunting Rifle, Scope,40 by DONGYUCHUN. For additional shooting products, visit their site.
Info About Scopes
Rifle scopes allow you to specifically aim a rifle at various targets by lining up your eye with the target at range. They do this through magnifying the target using a set of lenses within the scope. The scope’s alignment can be adjusted to account for many environmental factors like wind and elevation to make up for bullet drop.
The scope’s purpose is to understand precisely where the bullet will land based upon the sight picture you are viewing using the scope as you line up the scope’s crosshair or reticle with the intended point of impact. A lot of contemporary rifle optics have around eleven parts which are found internally and externally on the scope body. These scope parts include the rifle scope’s body, lenses, elevation dials, focus rings, and other elements. See all eleven parts of a rifle optical system.
Rifle Glass Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The sort of focal plane an optic has decides where the reticle or crosshair lies in relation to the scopes magnification. It actually means the reticle is behind or ahead of the magnifying lens of the scope. Picking out the very best style of rifle glass is dependent on what style of hunting or shooting you anticipate doing.
First Focal Plane Scope Facts
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These types of scopes are helpful for:
- Quick acquisition, far away types of shooting
- Shooting circumstances where estimations are small
- Experienced shooters who have an idea for their target “hold over” and “lead” ratios for their long gun
- Shooters who do not mind the reticle is bigger and takes up more visual eyesight room than a SFP reticle
Info About Second Focal Plane Optics
Second focal plane scopes (SFP) feature the reticle to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick.
- Far away kinds of shooting where shooters have increased time to make ballistic estimations
- Shooting where most shots occur within shorter ranges and distances
- Shooters who prefer a clearer optic picture without room used up by the bigger FFP reticle
Details on Optic Zoom
The level of scope magnification you need on your optic depends on the type of shooting you like to do. Almost every style of rifle optic supplies some degree of zoom. The level of zoom a scope provides is determined by the dimension, thickness, and curvatures of the lenses inside of the rifle optic. The magnification level of the scope is the “power” of the scope. This signifies what the shooter is aiming at through the scope is amplified times the power aspect of what can typically be seen by human eyes.
Fixed Power Lens Rifle Optic Details
A single power rifle optic uses a zoom number designator like 4×32. This indicates the zoom power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of optic can not adjust since it is a fixed power optic.
Variable Power Lens Scopes
Variable power rifle scopes use variable power levels. The power adjustment is achieved by the power ring part of the scope near the rear of the scope by the eye bell.
The Power and Range Correlation of Scopes
Here are some suggested scope powers and the distances where they may be effectively used. Highly magnified rifle scope glass will not be as beneficial as lower magnification level rifle scope glass considering that too much magnification can be a negative aspect depending on your shooting distance. The same idea applies to longer distances where the shooter needs adequate power to see precisely where to best aim the rifle.
Info on Rifle Glass Lens Coatings
All contemporary rifle scope lenses are layered. Lens finish is a vital element of a rifle’s setup when buying high end rifle optics and scope setups.
HD Versus ED Lens Coatings
Some scope manufacturers also use “HD” or high-definition lens finishes which use various processes, polarizations, chemicals, and elements to draw out a wide range of colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Coating Versus Multi-Coating for Glass
Various optic lenses can also have various finishes applied to them. All lenses generally have at least some type of treatment or finish applied to them before they are used in a rifle scope or optic.
Single coated lenses have a treatment applied to them which is typically a protective and enhancing multi-purpose treatment. This lens treatment can safeguard the lens from scratches while lowering glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends upon the scope manufacturer and the amount you spent on it. The scope’s maker and cost are indications of the lens quality.
Some scope manufacturers also make it a point to specify if their optic lenses are coated or “multi” coated. This implies the lens has multiple treatments applied to them. If a lens receives several treatments, it can show that a producer is taking numerous actions to combat different environmental factors like an anti-glare covering, a scratch resistant anti-abrasion coating, followed by a hydrophilic finish. This additionally doesn’t necessarily indicate the multi-coated lens is much better than a single covered lens. Being “better” hinges on the maker’s lens treatment innovation and the quality of products used in building the rifle optic.
About Anti-water Finish
Water on an optical lens does not help with maintaining a clear sight picture through an optic in any way. Many top of the line and premium scope makers will coat their lenses with a hydrophilic or hydrophobic finishing. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It provides protection for the exterior of the Steiner scope lens so the water molecules can not bind to it or produce surface tension. The result is that the water beads move off of the scope to maintain a clear, water free sight picture.
Choices for Mounting Rifle Scopes on Long Guns
Installing approaches for scopes come in a couple of choices. There are the standard scope rings which are separately mounted to the scope and one-piece mounts which cradle the scope. These different types of mounts also usually are made in quick release variations which use manual levers which enable rifle shooters to quickly install and dismount the scope.
Hex Key Rifle Glass Rings
Standard, 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 different rings to support the optic, and are often made from 7075 T6 billet aluminum which is created for long distance accuracy shooting. This type of scope mount is great for rifles which require a long lasting, rock solid mount which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Glass Rings
These kinds of quick-release rifle scope mounts can be used to quickly connect and take off a scope from a rifle. If they all use a similar style mount, several scopes can often be switched in the field. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers attach solidly to a flat top type Picatinny rail. This enables the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while preserving accuracy. These types of mounts are useful and beneficial for shooting platforms which are transferred a lot, to remove the scope glass from the rifle for protection, or for scopes which are adopted in between a number of rifles. An example of this mount style is the 30mm mount from the Vortex Optics brand. It normally costs around $250 USD
Rifle Scope Tube Sealing and Gas Purging
Wetness inside your rifle scope can mess up a day of shooting and your pricey optic by bringing about fogging and creating residue inside of the scope tube. Many scopes prevent moisture from entering the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Glass Tubes
Another part of avoiding the accumulation of wetness inside of the rifle optic tube is filling the tube with a gas like nitrogen. Considering that this area is currently occupied by the gas, the optic is less impacted by climate shifts and pressure variations from the outdoor environment which may potentially enable water vapor to leak in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
