Description
Rifle Scope Product Details
ohhunt 4.5x20E Compact Hunting Rifle Scope Red Illuminated Glass Etched Reticle Riflescope with Flip-Open Lens Caps and Rings
Magnification:4.33X
Objective Lens (mm):20
Weight(g)200
Length(mm):166
One-piece Tube: Yes
Eye Relief(mm):66
Field of View @ 100 yards: 4.5′
Exit Pupil (mm):4.44
Tube Diameter(mm/inch):25.4/1
Diopter adjustment: Yes
Click Value:1/4
Parallax Setting:100yds
Note: All scene photos are taken with a mobile phone. Rifle Scope haven’t range finder function, the distance in the picture is to let the buyer know its shooting distance. We send you 20mm picatinny Mount Rings default, please send me an email if you need 11mm Dovetail Mount Rings.
Rifle Scope Product Features
About this item
Optical Coating: Fully multi-coated optics
Reticle Construction: Glass Etched Reticle
Parallax Adjustment: NO
Illuminated Reticle: Red 11 level
Focal plane: Second focal plane
About the ohhunt Company
ohhunt is a premium maker for long gun scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They design and build their scopes and related products by choosing elements which are long lasting and durable. This includes the ohhunt 4.5x20E Compact Hunting Rifle Scope Red Illuminated Glass Etched Reticle Riflescope with Flip-Open Lens Caps and Rings by ohhunt. For more shooting items, visit their site.
What You Need to Know About Rifle Optics
Rifle scopes permit you to specifically align a rifle at different targets by lining up your eye with the target over a distance. They accomplish this through zoom by utilizing a series of lenses within the scope. The scope’s alignment can be adapted to take into account separate environmental things like wind speed and elevation decreases to make up for bullet drop.
The scope’s function is to understand precisely where the bullet will land based on the sight picture you are seeing using the scope as you align the scope’s crosshair or reticle with the intended point of impact. A lot of contemporary rifle scopes and optics have around eleven parts which are located within and outside of the scope. These parts include the rifle scope’s body, lenses, elevation turrets or dials, focus rings, and other elements. See all eleven parts of scopes.
Rifle Scope Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The style of focal plane a scope has determines where the reticle or crosshair lies in relation to the optic’s magnification. It simply suggests the reticle is located behind or in front of the magnifying lens of the optic. Picking the most desired kind of rifle scope is based on what kind of shooting or hunting you anticipate doing.
First Focal Plane Glass
First focal plane optics (FFP) come with the reticle before the zoom 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 magnified range as they are at the non amplified range. One tick on a mil-dot reticle at one hundred yards with no “zoom” is still the exact same tick at one hundred yards by using 5x “zoom”. These types of scopes are valuable for:
- Quick acquisition, far away kinds of shooting
- Shooting scenarios where calculations are minor
- Experienced shooters who have an idea for their target “hold over” and “lead” relationships for their long guns
- Shooters who don’t mind the reticle is enlarged and occupies more visual eyesight space than a SFP reticle
Info on Second Focal Plane Glass
Second focal plane optics (SFP) come with 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 styles of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots occur within shorter distances and ranges
- Shooters who choose a clearer optic picture with less space taken up by the bigger FFP reticle
Glass Zoom
The quantity of zoom a scope offers is identified 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.
Single Power Lens Glass Details
A single power rifle optic and scope comes with a zoom number designator like 4×32. This suggests the zoom power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of scope can not fluctuate since it is fixed.
Variable Power Lens Rifle Glass
Variable power rifle scopes use variable power levels. The power change is achieved by the power ring part of the scope near the back of the scope by the eye bell.
The Power Level and Range Correlation of Optics
Here are some recommended scope power settings and the ranges where they can be efficiently used. Always remember that high power optics and scopes will not be as efficient as lower magnification level optics and scopes due to the fact that excessive magnification can be a negative thing in certain situations. The exact same concept relates to longer distances where the shooter needs to have increased power to see exactly where to properly aim the rifle.
Details on Lens Coverings
All state-of-the-art rifle glass lenses are layered. Lens finishing can be an essential element of a shooting platform when considering high end rifle optics and scope equipment.
Details on Glass Lens Coatings – HD Versus ED
Some optic suppliers also use “HD” or high-def lens finishings which use different procedures, polarizations, aspects, and chemicals to extract separate colors and viewable definition through lenses. This high-def covering is commonly used with more costly high density glass which decreases light’s ability to refract by means of the lens glass. Some scope producers use “HD” to refer to “ED” suggesting extra-low dispersion glass. ED deals with how colors are represented on the chromatic spectrum and the chromatic difference or aberration which is similarly called color distortion or fringing. Chromatic aberration is often noticeable over things with well defined shapes as light hits the item from specific angles.
About Single Covering Versus Multi-Coating
Various optic lenses can even have various coverings applied to them. All lenses usually have at least some type of treatment or covering applied to them before they are used in a rifle scope or optic assembly. 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 optimally usable in numerous kinds of environments, degrees of light (full VS shaded), 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 safeguard the lens from scratches while reducing glare and other less beneficial things experienced in the shooting environment while sighting in with the optic. The quality of a single covered lens depends on the scope company and how much money you spent on it. Both the manufacturer and amount are indicators of the lens quality.
Some scope producers similarly make it a point to define if their optic lenses are layered or “multi” coated. Being “better” depends on the maker’s lens treatment technology and the quality of products used in building the rifle scope.
Anti-water Finish for Rifle Glass
Water on a lens does not assist with preserving a clear sight picture through a scope at all. Many top of the line and high-end optic companies will coat their lenses with a hydrophobic or hydrophilic anti-water covering.
Choices for Installing Optics on Long Guns
Mounting approaches for scopes come in a couple of options. There are the basic scope rings which are individually mounted to the scope and one-piece scope mounts which cradle the scope. These various kinds of mounts also usually can be found in quick release versions which use manual levers which enable rifle shooters to rapidly install and dismount the scopes.
Hex Key Glass Ring Mounting Solutions
Standard, clamp-on style mounting scope rings use hex head screws to position to the flattop design Picatinny scope mount rails on rifles. These types of scope mounts use two separate rings to support the optic, and are normally constructed from 7075 T6 billet aluminum which are created for long distance precision shooting. This type of scope mount is exceptional for rifle systems which are in need of a long lasting, hard use mount which will not shift no matter how much the scope is moved about or abuse the rifle takes. These are the type of mounts you want for a devoted optics system on a far away hunting or competitors rifle which will hardly ever need to be altered or adjusted. Blue 242 Loctite threadlocker can additionally be used on the scope mount screws to keep the hex screw threads from backing out after they are mounted firmly in place. An example of these mounting rings are the 30mm style made by Vortex Optics. The set usually costs around $200 USD
Quick-Release Cantilever Glass Rings
These types of quick-release rifle scope mounts can be used to quickly detach a scope and connect it to a different rifle. Multiple scopes can even be switched out if they all use a compatible style mount. These types of mounts are handy for rifles which are transported a lot, to swap out the optic from the rifle for protecting the scope, or for optics which are used between several rifles.
Rifle Optic Tube Sealing and Gas Purging
Wetness inside your rifle scope can destroy a day of shooting and your costly optic by triggering fogging and creating residue inside of the scope tube. A lot of scopes avoid wetness from getting in the scope tube with a system of sealing O-rings which are water resistant.
Scope Gas Purging
Another component of preventing the accumulation of wetness inside of the rifle scope tube is filling the tube with a gas like nitrogen. Because this space is currently taken up by the gas, the scope is less altered by condition changes and pressure variations from the external environment which might potentially permit 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 seek out.
