Last update on June 6, 2023 // Source: Amazon API
Rifle Scope Product Details
Visionking Rifle Scope 8.5-25×50 Riflescope Side Focus Mil-dot Hunting Tactical Long Range with Mount Rings
The Visionking 8.5-25×50 is 100% Waterproof and Fogproof,it has side focus from 10 yard to infinity,it can be used in all kinds of Hunting.
It’s fully multi-coated optics 30mm tube delivers superior brightness and outstanding repeatable accuracy.
Objective lens: 50mm
Eyepiece diameter: 37mm
Coating: FMC Green
Field of View(ft@100yds): 14.66-4.97
Exit Pupil: 5.8mm – 2.0mm
Eye Relief : 98.6mm – 88mm
Tube diameter (mm) 30mm
Finish: Matte black
Battery: CR2032 3V(No include)
Nitrogen: Full filled
Nitrogen Click Value: 1/8″
Parallax: +0.125SD ~ -0.125SD
Side Focus: 10 yard ~infinity
Length (mm) 400mm
Rifle Scope Product Features
Fully Multi-Coated lenses for superior brightness
High shock resistant
Side focus range of 10 yards to infinity
Adjustment turret lock,can be used for hunting,tactical,target shooting
About the Visionking Manufacturer
Visionking is a premium company for rifle scopes, optics, mounting solutions, and other components used for firearms like rifles and long guns. They style and supply their mounts, scopes, and related products by applying building materials which are long lasting and resilient. This includes the Visionking Rifle Scope 8.5-25×50 Riflescope Side Focus Mil-dot Hunting Tactical Long Range with Mount Rings by Visionking. For additional shooting products, visit their website.
What You Need to Know About Glass
Rifle scopes allow you to precisely aim a rifle at different targets by aligning your eye with the target at range. They accomplish this through zoom by making use of a set of lenses within the scope. The scope’s positioning can be dialed in for the consideration of many environmental considerations like wind speed and elevation increases or decreases to make up for bullet drop.
The scope’s function is to help shooters understand exactly where the bullet will hit based on the sight picture you are viewing using the optic as you line up the scope’s crosshair or reticle with the target. The majority of modern rifle optics have about eleven parts which are arranged internally and externally on the scope. These optic pieces include the rifle scope’s body, lenses, windage turrets, objective focus rings, and other elements. Learn about the eleven parts of glass.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The kind of focal plane an optic has decides where the reticle or crosshair is located in regard to the optic’s zoom. It actually implies the reticle is located behind or ahead of the magnification lens of the scope. Picking out the very best type of rifle glass is dependent on what type of hunting or shooting you plan on undertaking.
About First Focal Plane Scopes
Focal plane scopes (FFP) feature the reticle in front of the magnifying lens. This causes the reticle to increase in size based upon the extent of zoom being used. The outcome is that the reticle measurements are the same at the amplified range as they are at the non magnified range. One tick on a mil-dot reticle at one hundred yards without “zoom” is still the very same tick at 100 yards with 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away kinds of shooting
- Shooting circumstances where estimations are minor
- Experienced shooters who recognize their target “hold over” and “lead” equations for their rifles
- Shooters who do not mind the reticle is bigger and occupies more visual sight area than a SFP reticle
Info on Second Focal Plane Glass
Second focal plane optics (SFP) come with the reticle behind the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick measurement would be 1/5th of the non “zoom” tick reticle measurement.
- Far away kinds of shooting where shooters have more time to make ballistic computations
- Shooting where most shots take place within shorter proximities and ranges
- Shooters who would like a clearer optic sight picture with less space taken up by the larger size FFP reticle
Details on Optic Zoom
The amount of scope zoom you need on your scope depends upon the type of shooting you like to do. Practically every type of rifle scope provides some degree of magnification. The amount of zoom a scope gives is determined by the diameter, thickness, and curves of the lens glass inside of the rifle optic. The magnifying level of the optic is the “power” of the scope. This indicates what the shooter is observing through the scope is amplified times the power aspect of what can generally be seen by human eyes.
Fixed Single Power Lens Optics
A single power rifle optic and scope 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 zoom of this kind of scope can not fluctuate given that it is a fixed power scope.
Variable Power Lens Optic Details
Variable power rifle scopes have adjustable power. These types of scopes will list the zoom amount in a configuration like 2-10×32. These numbers indicate the magnification of the scope can be set between 2x and 10x power. This also includes the powers in-between 2 and 10. The power modification is accomplished by employing the power ring component of the scope near the back of the scope by the eye bell.
Glass Power Level and Range Correlation
Here are some advised scope power levels and the ranges where they could be successfully used. High power scopes will not be as effective as lower magnification level glass considering too much magnification can be a bad thing. The very same idea goes for longer ranges where the shooter needs sufficient power to see precisely where to properly aim the rifle.
Lens Covering for Rifle Optics
All contemporary rifle scope lenses are coated. There are different types and qualities of glass coatings. Lens finish is an important element of a rifle’s setup when considering luxury rifle optics and scope systems. The lenses are one of the most key pieces of the optic considering that they are what your eye sees through while sighting a rifle in on the target. The covering on the lenses offers protection to the lens surface and even helps with anti glare from excess direct sunlight and color profiles.
HD Versus ED Scope Lens Coatings
Some scope producers also use “HD” or high-definition lens finishes which use different techniques, elements, polarizations, and chemicals to draw out separate colors and viewable quality through the lens. Some scope manufacturers use “HD” to refer to “ED” implying extra-low dispersion glass.
Details on Single Finishing Versus Multi-Coating
Different optic lenses can even have different coatings applied to them. All lenses typically have at least some type of treatment or covering applied to them prior to being used in a rifle scope or optic. Since the lens isn’t simply a raw piece of glass, they require performance enhancing coatings. It becomes part of the carefully tuned optic. It requires a coating to be applied to it so that it will be efficiently functional in lots of kinds of environments, degrees of light (full VS shade), and other shooting conditions.
Single covered lenses have a treatment applied to them which is typically a protective and boosting multi-purpose treatment. This lens treatment can shield the lens from scratches while decreasing glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope manufacturer and just how much you paid for it. Both the make and cost are indications of the lens quality.
Some scope makers also make it a point to define if their optic lenses are layered or “multi” covered. Being “better” depends on the maker’s lens treatment technology and the quality of products used in constructing the rifle scope.
About Anti-water Finishing
Water on an optic’s lens doesn’t improve keeping a clear sight picture through an optic whatsoever. Lots of top of the line or high-end scope manufacturers will coat their lenses with a hydrophobic or hydrophilic finish. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It treats the exterior of the Steiner scope lens so the water molecules can not bind to it or create surface tension. The result is that the water beads slide off of the scope to maintain a clear, water free sight picture.
Alternatives for Installing Rifle Optics on Firearms
Mounting solutions for scopes are available in a few choices. There are the basic scope rings which are separately mounted to the optic and one-piece mounts which cradle the scope. These various types of mounts also normally are made in quick release versions which use throw levers which enable rifle operators to quickly mount and remove the scope.
Rifle Scope Mounts with Hex Key Rings
Standard, clamp style mounting scope rings use hex head screws to fix to the flattop style Picatinny scope mounting rails on the tops of rifles. These types of scope mounts use double independent rings to support the optic, and are made from 7075 T6 billet aluminum or similar materials which are developed for far away accuracy shooting. This type of scope mount is great for rifle systems which require a durable, rock solid mount which will not move despite how much the scope is moved or jarring the rifle takes. These are the type of mounts you want for a faithful optics setup on a long distance scouting or tournament firearm which will almost never need to be altered or recalibrated. Blue 242 Loctite threadlocker can also be used on screws to stop the hex screw threads from wiggling out after they are installed firmly in place. An example of these rings are the 30mm type from the Vortex Optics company. The set usually costs around $200 USD
Quick-Release Cantilever Rifle Optic Ring Mounts
These kinds of quick-release rifle scope mounts can be used to rapidly connect and take off a scope from a rifle. If they all use a similar style mount, several scopes can also be switched on the range. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers fasten securely to a flat top type Picatinny rail. This permits the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while keeping the original sighting settings. These types of mounts are useful and convenient for rifles which are transported a lot, to remove the scope glass from the rifle for protection, or for sight systems which are employed between multiple rifles. An example of this mount style is the 30mm mount from the Vortex Optics brand. It generally costs around $250 USD
What to Know About Glass Tube Sealing and Gas Purging
Wetness inside your rifle optic can ruin a day of shooting and your pricey optic by triggering fogging and producing residue inside of the scope tube. Many scopes avoid moisture from entering the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Rifle Optic Tubes
Another component of preventing the accumulation of wetness inside of the rifle optic’s tube is filling the tube with a gas like nitrogen. Given that this area is currently occupied by the gas, the optic is less affected by climate shifts and pressure distinctions from the external environment which could potentially allow water vapor to permeate in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a good rifle scope to look for.