Description
Last update on May 17, 2022 // Source: Amazon API
Rifle Scope Product Details
Robin Hunting 2-8X20 Tactical Optical Sight with 11/20mm Rail Mount Rings Shooting Outdoor Rifle Scope
Rifle Scope Product Features
2-8x magnification, 1/4 MOA click value, 1 Inch body tube without lock
Use of 4 screws in total is more stable and secure than 2 screws on standard mounts
Complete with flip-open lens caps and rings
Mil-dot reticle black for Optimal Aiming and Shooting Performance
Built on strength platform, completely sealed and high quality material
About the Robin Hunting Scope Maker
Robin Hunting is a premium manufacturer for long gun scopes, optics, mounting solutions, and other components used for firearms like rifles and long guns. They design and supply their scopes and related products by choosing materials which are long lasting and durable. This includes the Robin Hunting 2-8X20 Tactical Optical Sight with 11/20mm Rail Mount Rings Shooting Outdoor Rifle Scope by Robin Hunting. For more shooting items, visit their site.
What You Need to Know About Rifle Optics
Rifle scopes permit you to specifically aim a rifle at various targets by lining up your eye with the target at range. They do this through magnification by making use of a series of lenses within the scope. The scope’s positioning can be adapted to account for numerous natural aspects like wind and elevation decreases to account for bullet drop.
The scope’s purpose is to understand precisely where the bullet will land based on the sight picture you are viewing via the optic as you line up the scope’s crosshair or reticle with the target. Many contemporary rifle scopes and optics have about eleven parts which are arranged within and externally on the optic. These optic pieces include the rifle scope’s body, lenses, adjustment dials or turrets, objective focus rings, and other parts. Learn about the eleven parts of rifle scopes.
About Rifle Glass Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding on the best type of rifle glass is based around what type of shooting you plan on doing.
About First Focal Plane Optics
Focal plane scopes (FFP) include the reticle in front of the zoom lens. These kinds of scopes are useful for:
- Quick acquisition, far away kinds of shooting
- Shooting scenarios where calculations are low
- Experienced shooters who recognize their aim point “hold over” and “lead” correlations for their rifles
- Shooters who don’t mind the reticle is bigger and takes up more visual eyesight space than a SFP reticle
Second Focal Plane Glass Info
Second focal plane optics (SFP) include the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick.
- Far away forms of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots happen within much shorter ranges and distances
- Shooters who want a clearer optic picture with less area used up by the larger size FFP reticle
Magnification for Optics
The amount of magnification a scope offers is determined by the size, thickness, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Single Power Lens Rifle Scope Facts
A single power rifle scope or optic will have a magnification number designator like 4×32. This indicates the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of scope can not fluctuate because it is set from the factory.
Adjustable Power Lens Rifle Glass
Variable power rifle scopes have adjustable power. These types of scopes will note the zoom degree in a format such as 2-10×32. These numbers mean the zoom of the scope could be changed between 2x and 10x power. This also incorporates the power levels in-between 2 and 10. The power adjustment is accomplished by applying the power ring part of the scope near the back of the scope by the eye bell.
The Power Level and Range Correlation of Rifle Optics
Here are some suggested scope powers and the ranges where they can be successfully used. High power scopes will not be as effective as lower powered rifle scope glass considering too much zoom can be a bad thing. The very same idea relates to longer distances where the shooter needs to have sufficient power to see precisely where to best aim the rifle.
About Lens Finishing
All modern-day rifle scope lenses are covered in special coatings. There are various types and qualities of coatings. When considering high end rifle optics and scope devices, Lens covering can be a very important aspect of defining the rifle’s capability. The lenses are one of the most vital pieces of the glass since they are what your eye sees through while sighting a rifle in on the point of impact. The finish on the lenses offers protection to the lens surface and also improves anti glare capabilities from refracted daylight and color presence.
Info on Lens Coatings – HD Versus ED
Some glass manufacturers also use “HD” or high-definition lense finishes that take advantage of different processes, polarizations, components, and chemicals to enhance a wide range of colors and viewable target visibility through lenses. This high-definition finishing is often used with more costly, high density lens glass which reduces light’s ability to refract through the lens glass. Some scope suppliers use “HD” to refer to “ED” indicating extra-low dispersion glass. ED deals with how certain colors are presented on the chromatic spectrum and the chromatic aberration or deviance which is similarly called color distortion or fringing. Chromatic aberration may be obvious over items with well defined outlines as light hits the item from certain angles.
Details on Single Finishing Versus Multi-Coating
Different optic lenses can also have various coatings applied to them. All lenses usually have at least some type of treatment or finishing used to them before they are used in a rifle scope or optic.
Single covered 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 minimizing glare and other less beneficial things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends upon the scope maker and how much money you spent for it. Both the manufacturer and amount are indications of the lens quality.
Some scope makers similarly make it a point to define if their optic lenses are covered or “multi” coated. Being “better” depends on the maker’s lens treatment technology and the quality of materials used in building the rifle scope.
Rifle Optic Lens Anti-water Coating
Water on a lens doesn’t assist with preserving a clear sight picture through a scope at all. Numerous top of the line and high-end scope makers will coat their lenses with a hydrophobic or hydrophilic anti-water finishing.
Alternatives for Installing Optics on Long Guns
Installing approaches for scopes come 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 types of mounts also normally can be found in quick release versions which use throw levers which allow rifle shooters to rapidly mount and dismount the optics.
Rifle Scope Mounting Solutions with Hex Key Rings
Normal, clamp style mounting scope rings use hex head screws to mount to the flattop design Picatinny scope installation 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 designed for long distance precision shooting. This type of scope install is wonderful for rifles which need a resilient, sound mounting solution which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Rifle Glass Ring Mounting Solutions
These types of quick-release rifle scope mounts can be used to quickly remove a scope from a rifle and reattach it to a different rifle. Multiple scopes can also be switched out if they all use a similar style mount. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers fasten tightly to a flat top type Picatinny rail. This permits the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while keeping precision. These kinds of mounts come in beneficial for shooting platforms which are hauled around a lot, to take off the scope from the rifle for protection, or for scopes which are used in between a number of rifles. An example of this mount style is the 30mm mount designed by the Vortex Optics brand. It normally costs around $250 USD
About Optic Tube Sealing and Gas Purging
Wetness inside your rifle scope can spoil a day of shooting and your expensive optic by inducing fogging and making residue inside of the scope tube. A lot of scopes protect against moisture from going into the optical tube with a series of sealing O-rings which are water resistant. Usually, these water resistant scopes can be immersed beneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be sufficient moisture avoidance for common use rifles for hunting and sporting purposes, unless you anticipate taking your rifle sailing and are worried about the optic still performing if it is submerged in water and you can still salvage the gun.
Gas Purged Optic Tubes
Another part of avoiding the accumulation of moisture inside of the rifle optic tube is filling the tube with a gas like nitrogen. Since this area is already occupied by the gas, the optic is less impacted by condition changes and pressure variations from the external environment which could possibly allow water vapor to permeate in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.
