Description
Last update on August 14, 2022 // Source: Amazon API
Rifle Scope Product Details
SIGHTRON 25015 SIII 30mm Riflescope 8-32x56mm, Long Range Illuminated MOA-H Reticle
Sightron III Series SIIISS 8-32x56mm lrirmoa-h riflescopefeatures:- fast focus eyeball- side focus system- III Series one-piece Main-Tube – ExacTrack- Zact-7 Revcoat multi-coating (III Series)- all weather construction- tactical turrets 0.25 MOA.
Rifle Scope Product Features
Black matte finish
All weather construction
Fast focus eyebell
About the SIGHTRON Company
SIGHTRON is a premium company for firearm scopes, optics, mounts, and other components used for firearms like rifles and long guns. They style and manufacture their mounts, scopes, and related products by applying building materials which are long lasting and durable. This includes the SIGHTRON 25015 SIII 30mm Riflescope 8-32x56mm, Long Range Illuminated MOA-H Reticle by SIGHTRON. For more shooting goods, visit their website.
Information Rifle Glass
Rifle scopes allow you to exactly align a rifle at different targets by lining up your eye with the target at range. They accomplish this through zoom by utilizing a set of lenses inside the scope. The scope’s positioning can be dialed in for consideration of varied environmental elements like wind and elevation increases or decreases to account for bullet drop.
The scope’s purpose is to understand precisely where the bullet will hit based upon the sight picture you are viewing via the scope as you align the scope’s crosshair or reticle with the intended target. The majority of modern rifle scopes have about 11 parts which are found within and outside of the scope. These optic pieces include the rifle scope’s body, lenses, modification turrets or dials, objective focus rings, and other components. See all eleven parts of a rifle scope.
Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding on the best type of rifle glass depends on what type of shooting you plan on doing.
First Focal Plane Optic Info
Focal plane scopes (FFP) come with the reticle in front of the zoom lens. This causes the reticle to increase in size based on the level of zoom being used. The result is that the reticle measurements are the same at the enhanced range as they are at the non magnified distance. For example, one tick on a mil-dot reticle at one hundred yards without any “zoom” is still the same tick at 100 yards with 5x “zoom”. These types of scopes work for:
- Quick acquisition, long distance kinds of shooting
- Shooting scenarios where estimations are low
- Experienced shooters who recognize their target “hold over” plus “lead” relationships for their weapon
- Shooters who don’t mind the reticle is enlarged and uses up more visual eyesight space than a SFP reticle
Second Focal Plane Optics
Second focal plane glass (SFP) come with the reticle behind the magnifying lens. This triggers the reticle to stay at the same scale relative to the amount of magnification being used. The final result is that the reticle measurements shift based upon the magnification applied to shoot over greater ranges due to the fact that the markings represent different increments which differ with the zoom. In the FFP example with the SFP optic, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick. These sorts of scopes are beneficial for:
- Far away types of shooting where shooters have increased time to make ballistic estimations
- Shooting where most shots happen within much shorter proximities and ranges
- Shooters who want a clearer optic picture without room taken up by the enlarged FFP reticle
Magnification for Glass
The amount of zoom a scope offers is figured out by the diameter, thickness, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
About Fixed Single Power Lens Glass
A single power rifle optic uses a magnification number designator like 4×32. This means the zoom power of the scope is 4x power while the objective lens is 32mm. The zoom of this kind of optic can not adjust given that it is a set power scope.
Info on Adjustable Power Lens Glass
Variable power rifle scopes can be modified between magnified levels. The power modification is achieved by the power ring part of the scope near the back of the scope by the eye bell.
Rifle Scope Power and Ranges
Here are some advised scope power settings and the ranges where they could be successfully used. Remember that high magnification optics and scopes will not be as effective as lower magnification level glass because increased zoom can be a bad thing. The very same idea goes for extended distances where the shooter needs to have sufficient power to see precisely where to best aim the rifle at the target.
Rifle Glass Lens Finish
All current rifle scope and optic lenses are layered. Lens covering can be a significant aspect of a shooting platform when thinking about high end rifle optics and scope systems.
ED Versus HD Rifle Optics
Some scope producers also use “HD” or high-definition lens finishes which use various methods, elements, chemicals, and polarizations to draw out separate colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Finishing Versus Multi-Coating for Rifle Scopes
Different scope lenses can even have various finishes applied to them. All lenses usually have at least some kind of treatment or coating applied to them prior to being used in a rifle scope or optic assembly. 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 must have a coating placed on it so that it will be optimally usable in numerous kinds of environments, degrees of light (full light VS shaded), and other shooting conditions.
Single covered lenses have a treatment applied to them which is usually a protective and improving multi-purpose treatment. This lens treatment can protect the lens from scratches while decreasing glare and other less helpful things experienced in the shooting environment while sighting in with the optic. The quality of a single layered lens depends on the scope producer and how much money you paid for it. The scope’s maker and cost are indicators of the lens quality.
Some scope manufacturers also make it a point to specify if their optic lenses are layered or “multi” covered. This suggests the lens has had numerous treatments applied to them. If a lens gets multiple treatments, it can establish that a producer is taking numerous steps to fight different environmental factors like an anti-glare coating, a scratch resistant anti-abrasion covering, followed by a hydrophilic finishing. This additionally does not always imply the multi-coated lens is better than a single layered lens. Being “much better” is dependent on the producer’s lens treatment innovation and the quality of materials used in creating the rifle glass.
Hydrophobic Lens Finishing
Water on a lens does not assist with preserving a clear sight picture through a scope at all. Many top of the line and military grade optic companies will coat their lenses with a hydrophilic or hydrophobic finish.
Alternatives for Installing Optics on Long Guns
Mounting solutions for scopes are available in a couple of options. There are the basic scope rings which are separately mounted to the optic and one-piece mounts which cradle the scope. These different types of mounts also normally are made in quick release versions which use manual levers which permit rifle operators to quickly mount and remove the glass.
Rifle Scope Mounting Solutions with Hex Key Rings
Normal, clamp design mounting scope rings use hex head screws to mount to the flattop design Picatinny scope mount rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are often made from 7075 T6 billet aluminum which are developed for long range precision shooting. This type of scope install is great for rifles which need a long lasting, sound mounting solution which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Rifle Optic Ring Mounts
These types of quick-release rifle scope mounts can be used to rapidly remove a scope and attach it to a different rifle. Multiple scopes can even be swapped out if they all use a compatible style mount. These types of mounts are convenient 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.
Optic Tube Sealing and Gas Purging
Moisture inside your rifle optic can ruin a day of shooting and your costly optic by bringing about fogging and creating residue inside of the scope tube. The majority of scopes avoid wetness from entering the scope tube with a system of sealing O-rings which are water resistant.
Optic Gas Purging
Another element of preventing the accumulation of moisture inside of the rifle optic tube is filling the tube with a gas like nitrogen. Considering that this area is already taken up by the gas, the scope is less impacted by condition alterations and pressure differences from the external environment which could possibly permit water vapor to permeate in around the seals to fill the void which would otherwise be there. These are good qualities of a good rifle scope to seek out.
