Description
Rifle Scope Product Details
ohhunt LR 4.5-27×50 SFIR Hunting Rifle Scope 30mm Tube Red Illumination Mil Dot Glass Etched Reticle with Mount Side Parallax Turrets Lock Reset
Rifle Scope Product Features
Magnification:4.5X-27XObjective Lens (mm):50Net Weight(g):815
Length(mm):334 with Sunshade 410One”piece Tube: YesEye Relief(inch): 3.39-4.02
Tube Diameter(mm/inch):30/1.18Eyepiece Field of view:20Field of View (ft@100yds) : 23.8ft @ 4.5x-4.4ft @ 27.5x
Click Value:1/10 MILDiopter Range: +/-Parallax Setting:10 to Inf
Max.Elevation/Windage(moa): 80 (Example: 50 MOA is roughly 25 MOA from center.)
About the ohhunt Manufacturer
ohhunt is a premium maker for long gun scopes, optics, mounts, and other accessories used for guns like rifles and long guns. They create and make their products by applying materials which are long lasting and resilient. This includes the ohhunt LR 4.5-27×50 SFIR Hunting Rifle Scope 30mm Tube Red Illumination Mil Dot Glass Etched Reticle with Mount Side Parallax Turrets Lock Reset by ohhunt. For additional shooting items, visit their website.
What You Need to Know About Scopes
Rifle scopes allow you to exactly aim a rifle at different targets by aligning your eye with the target at range. They do this through zoom by making use of a set of lenses inside the scope. The scope’s alignment can be adjusted for consideration of varied ecological aspects like wind speed and elevation to make up for bullet drop.
The scope’s function is to help the shooter understand exactly where the bullet will hit based on the sight picture you are seeing with the optic as you line up the scope’s crosshair or reticle with the intended target. The majority of contemporary rifle scopes and optics have about eleven parts which are found inside and outside of the optic. These parts include the rifle scope’s body, lenses, windage dials or turrets, focus rings, and other elements. See all eleven parts of scopes.
About Optic Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The form of focal plane an optic has decides where the reticle or crosshair lies in regard to the scopes zoom. It literally indicates the reticle is located behind or in front of the magnifying lens of the optic. Deciding upon the most reliable kind of rifle glass is based upon what variety of shooting you plan on undertaking.
About First Focal Plane Optics
First focal plane scopes (FFP) come with the reticle ahead of the magnification lens. This induces 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 amplified range as they are at the non amplified distance. For instance, one tick on a mil-dot reticle at one hundred yards without having “zoom” is still the corresponding tick at 100 yards using 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away kinds of shooting
- Shooting situations where calculations are marginal
- Experienced shooters who understand their target “hold over” as well as “lead” correlations for their firearm
- Shooters who do not mind the reticle is bigger and uses up more visual eyesight room than a SFP reticle
Info About Second Focal Plane Glass
Second focal plane glass (SFP) come with the reticle to the rear of the magnifying lens. This induces the reticle to remain at the exact same scale relative to the level of zoom being used. The result is that the reticle measurements change based upon the zoom employed to shoot over greater ranges because the reticle markings represent various increments which can vary with the magnification level. In the FFP illustration with the SFP glass, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick. These particular sorts of glass are handy for:
- Far away styles of shooting where shooters have more time to make ballistic computations
- Shooting where most of the shots happen within shorter ranges and proximities
- Shooters who choose a clearer optic picture with less room used up by the larger size FFP reticle
Rifle Scope Magnification
The quantity of magnification a scope supplies is figured out 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.
Info on Single Power Lens Rifle Scopes
A single power rifle scope uses a zoom number designator like 4×32. This implies the magnification power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of scope can not change given that it is a fixed power optic.
Variable Power Lens Glass Details
Variable power rifle scopes use enhanced power. The power modification is accomplished by making use of the power ring part of the scope near the rear of the scope by the eye bell.
Rifle Optic Power Level and Ranges
Here are some recommended scope power levels and the ranges where they may be efficiently used. Highly magnified rifle scope glass will not be as beneficial as lower magnification level glass given that too much magnification can be a bad thing. The same concept goes for longer distances where the shooter needs to have enough power to see where to properly aim the rifle.
Info on Scope Lens Coating
All modern-day rifle scope and optic lenses are covered in special coatings. There are different types and qualities of glass finishings. When thinking about high end rifle scope devices, Lens covering can be an important element of defining the rifle’s capability. The glass lenses are among the most vital parts of the glass because they are what your eye looks through while sighting a rifle in on the target. The coating on the lenses safeguards the lens surface area and helps with anti glare capabilities from refracted direct sunlight and color discernibility.
HD Versus ED Lenses
Some glass companies additionally use “HD” or high-definition lens coatings which make the most of various procedures, polarizations, chemicals, and elements to extract a wide range of color ranges and viewable definition through lenses. This HD finishing is commonly used with increased density lens glass which drops light’s chance to refract through the lens glass. Some scope corporations use “HD” to refer to “ED” meaning extra-low dispersion glass. ED handles how colors are presented on the chromatic spectrum and the chromatic aberration or difference which is similarly called color distortion or fringing. Chromatic aberration is often noticeable over objects with hard outlines as light hits the item from particular angles.
Single Coating Versus Multi-Coating
Different optic lenses can also have various finishings applied to them. All lenses normally have at least some type of treatment or covering used to them before being used in a rifle scope or optic.
Single coated lenses have a treatment applied to them which is generally a protective and enhancing multi-purpose treatment. This lens treatment can shield the lens from scratches while decreasing glare and other less helpful things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends on the scope developer and how much money you spent for it. Both the make and cost are indicators of the lens quality.
Some scope producers likewise make it a point to specify if their optic lenses are covered or “multi” covered. This implies the lens has multiple treatments applied to the surfaces. If a lens receives several treatments, it can prove that a maker is taking numerous steps to fight different environmental aspects like an anti-glare coating, a scratch resistant anti-abrasion finishing, followed by a hydrophilic finish. This additionally doesn’t necessarily indicate the multi-coated lens will perform better than a single coated lens. Being “much better” depends on the manufacturer’s lens treatment technology and the quality of materials used in creating the rifle optic.
Anti-water Scope Lens Finish
Water on an optic’s lens does not support keeping a clear sight picture through an optic in any way. Lots of top of the line and premium optic makers will coat their lenses with a hydrophilic or hydrophobic coating. The Steiner Optics Nano-Protection is a good example of this sort of treatment. It treats the surface of the Steiner optic lens so the water molecules can not bind to it or create surface tension. The result is that the water beads sheet off of the scope to maintain a clear, water free sight picture.
Choices for Installing Rifle Glass on Firearms
Mounting options for scopes come in a couple of choices. There are the standard scope rings which are individually installed to the optic and one-piece scope mounts which cradle the scope. These various types of mounts also normally are made in quick release versions which use throw levers which permit rifle shooters to rapidly install and remove the optics.
Hex Key Rifle Optic Ring Mounts
Standard, clamp-on style mounting optic rings use hex head screws to position to the flattop design Picatinny scope mount rails on rifles. These styles of scope mounts use two detached rings to support the optic, and are made from 7075 T6 billet aluminum which are developed for long distance accuracy shooting. This form of scope mount is effective for rifle systems which need to have a long lasting, unfailing mount which will not shift no matter how much the scope is moved or jarring the rifle takes. These are the type of mounts you really want to have for a specialized optics system on a reach out and touch someone scouting or tournament rifle which will rarely need to be modified or adjusted. Blue 242 Loctite threadlocker can also be used to stop the hex screw threads from backing out after they are installed safely in place. An example of these rings are the 30mm style from Vortex Optics. The set usually costs around $200 USD
Rifle Glass Mounting Solutions with Quick-Release Cantilever Rings
These kinds of quick-release rifle scope mounts can be used to quickly detach a scope from a rifle and reattach it to a different rifle. Several 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 attach solidly to a flat top style Picatinny rail. This allows the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while retaining precision. These types of mounts come in convenient for shooting platforms which are transferred between vehicles a lot, to remove the optic from the rifle for protection, or for scopes which are chosen for use in between multiple rifles. An example of this mount style is the 30mm mount from the Vortex Optics brand. It generally costs around $250 USD
Sealing and Gas Purging for Glass Tubes
Moisture inside your rifle scope can ruin a day of shooting and your expensive optic by triggering fogging and developing residue inside of the scope tube. Many scopes avoid wetness from entering the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Scope Tubes
Another part of preventing the buildup of moisture inside of the rifle scope’s tube is filling the tube with a gas like nitrogen. Because this space is currently occupied by the gas, the scope is less affected by temp shifts and pressure variations from the outdoor environment which might potentially allow water vapor to seep in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to look for.
