Description
Rifle Scope Product Details
Binow 2-8X20 Rifle Scope
Specifications
Finish: Matte
Magnification: 2-8x
Objective lens: 20mm
Reticle: Circle-X
Field of view: 31.5 feet @ 100 feet
Adjustment range: 50 inches @ 100 yards
Eye relief: 3.3 inches
Exit pupil: 8mm
Click value: 0.25 inches @ 100 yards
Length: 3.74 inches
Weight: 10.85 ounces
Rifle Scope Product Features
High precision tactical rifle scope with 2-8x magnification, a 20mm objective lens.
Multi-coated blue objective lens, boast higher light transmittance for better clarity performance compared to normal objective lens.
Aircraft grade aluminum construction, waterproof, fog proof performance, nitrogen filled and o-ring sealed for waterproof, fog proof performance.
Solid aluminum alloy construction, quick and secure attachment to all picatinny or weaver rails.
Dusk & Dawn Brightness (DDB) multicoated lenses for clarity and brightness
About the Binow Manufacturer
Binow is a premium manufacturer for long gun scopes, optics, mounts, and other add-ons used for guns like rifles and long guns. They style and manufacture their products making the most of materials which are durable and long lasting. This includes the Binow 2-8X20 Rifle Scope by Binow. For additional shooting items, visit their site.
What You Need to Know About Rifle Glass
Rifle scopes allow you to precisely align a rifle at various targets by aligning your eye with the target over a range. They do this through magnifying the target by using a set of lenses inside the scope. The scope’s alignment can be adapted for consideration of numerous natural considerations like wind speed and elevation decreases to make up for bullet drop.
The scope’s function is to help the shooter understand precisely where the bullet will hit based on the sight picture you are seeing through the scope as you line up the scope’s crosshair or reticle with the target. Most contemporary rifle scopes have about eleven parts which are arranged within and externally on the scope body. These optic pieces consist of the rifle scope’s body, lenses, windage and elevation dials, focus rings, and other parts. Learn about the eleven parts of rifle glass.
About Rifle Scope Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Choosing the perfect type of rifle scope is based around what type of shooting you plan on doing.
Info About First Focal Plane Glass
First focal plane scopes (FFP) come with the reticle in front of the magnifying lens. This causes the reticle to increase in size based upon the extent of magnification being used. The benefit is that the reticle measurements are the same at the magnified range as they are at the non magnified distance. For instance, one tick on a mil-dot reticle at 100 yards without having “zoom” is still the same tick at one hundred yards with 5x “zoom”. These kinds of scopes are valuable for:
- Quick acquisition, long distance types of shooting
- Shooting situations where calculations are marginal
- Experienced shooters who recognize their target “hold over” and also “lead” equations for their firearm
- Shooters who do not mind the reticle is enlarged and requires more visual sight space than a SFP reticle
About Second Focal Plane Glass
Second focal plane optics (SFP) feature the reticle behind the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick measurement.
- Far away kinds of shooting where shooters have extra time to make ballistic calculations
- Shooting where most shots occur within much shorter spaces and ranges
- Shooters who want a clearer optic sight picture without area used up by the larger sized FFP reticle
About Glass Zoom
The amount of zoom a scope provides is figured out by the size, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Power Lens Rifle Optics
A single power rifle optic uses a magnification number designator like 4×32. This implies the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this kind of optic can not change since it is a set power scope.
Info on Variable Power Lens Rifle Optics
Variable power rifle scopes can be changed between magnification levels. It will list the zoom amount in a configuration such as 2-10×32. These numbers mean the zoom of the scope can be set between 2x and 10x power. This additionally includes the powers in-between 2 and 10. The power manipulation is accomplished utilizing the power ring part of the scope near the back of the scope by the eye bell piece.
The Power Level and Range of Rifle Optics
Here are some advised scope power levels and the distances where they can be efficiently used. Bear in mind that higher magnification glass will not be as effective as lower magnification level optics and scopes since increased zoom can be a bad thing. The exact same concept applies to longer distances where the shooter needs to have increased power to see exactly where to best aim the rifle at the target.
Lens Finishing for Rifle Glass
All modern-day rifle scope and optic lenses are coated. There are different types and qualities of glass lens finishes. When thinking about high end rifle optical units, Lens covering can be an essential element of defining the rifle’s capability. The lenses are one of the most essential components of the optic given that they are what your eye sees through while sighting a rifle in on the point of impact. The finishing on the lenses shields the lens surface area and even improves anti glare from excess sunlight and color discernibility.
HD Versus ED Lens Coatings
Some optic companies will also use “HD” or high-definition lense finishings which apply various processes, components, polarizations, and chemicals to extract numerous colors and viewable target definition through lenses. This high-def finish is frequently used with greater density glass which lowers light’s potential to refract by means of the lens glass. Some scope manufacturers use “HD” to refer to “ED” indicating extra-low dispersion glass. ED handles how certain colors are represented on the chroma spectrum and the chromatic deviance or aberration which is also called color distortion or fringing. Chromatic aberration can be visible over items with hard shapes as light hits the item from particular angles.
Single Finishing Versus Multi-Coating
Different scope lenses can also have various finishes applied to them. All lenses usually have at least some type of treatment or finish applied to them prior to being used in a rifle scope or optic. This is because the lens isn’t simply a raw piece of glass. It is part of the finely tuned optic. It requires a coating to be applied to it so that it will be efficiently usable in numerous kinds of environments, degrees of light (full VS shade), and other shooting conditions.
This lens treatment can offer protection to the lens from scratches while decreasing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope makers similarly make it a point to define if their optic lenses are layered or “multi” coated. Being “much better” depends on the producer’s lens treatment technology and the quality of products used in constructing the rifle scope.
Anti-water Lens Coatings
Water on a lens does not help with maintaining a clear sight picture through a scope at all. Lots of top of the line and military grade scope companies will coat their lenses with a hydrophilic or hydrophobic coating.
Rifle Glass Installation Choices
Mounting solutions for scopes can be found in a couple of options. There are the standard scope rings which are separately installed to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also usually can be found in quick release versions which use throw levers which permit rifle operators to rapidly mount and remove the optics.
Hex Key Rifle Optic Ring Mounting Solutions
Basic, clamp type mounting scope rings use hex head screws to fix to the flattop design Picatinny scope mounting rails on rifles. These types of scope mounts use double individual rings to support the optic, and are made from 7075 T6 billet aluminum which are made for far away precision shooting. This kind of scope mount is effective for rifle systems which are in need of a resilient, hard use mount which will not change despite just how much the scope is moved or jarring the rifle takes. These are the style of mounts you really want to have for a faithful scope system on a far away hunting or hard target interdiction rifle which will hardly ever need to be modified or adjusted. Blue 242 Loctite threadlocker can additionally be used to keep the hex screws from wiggling out after they are mounted tightly in position. An example of these rings are the 30mm style from Vortex Optics. The set generally costs around $200 USD
Quick-Release Cantilever Glass Ring Mounts
These types of quick-release rifle scope mounts can be used to rapidly connect and detach a scope from a rifle before reattaching it to a different rifle. Numerous scopes can even be swapped out if they all use a similar design mount. These types of mounts come in 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 multiple rifles or are situationally focused.
Details on Rifle Optic Tube Sealing and Gas Purging
Moisture inside your rifle optic can mess up a day on the range and your expensive optic by inducing fogging and generating residue inside of the scope’s tube. Most scopes prevent moisture from getting in the optical tube with a series of sealing O-rings which are waterproof. Typically, these optics can be immersed within 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be plenty of wetness avoidance for common use rifles, unless you anticipate taking your rifle on a boat and are worried about the optic still functioning if it is submerged in water and you can still retrieve the rifle.
What to Know About Rifle Optic Tube Gas Purging
Another component of avoiding the accumulation of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Since this area is already taken up by the gas, the glass is less impacted by temp alterations and pressure differences from the external environment which could possibly enable water vapor to seep in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a good rifle scope to seek out.
