Last update on February 5, 2023 // Source: Amazon API
Rifle Scope Product Details
SIGHTRON 25168 SIII Long Range Zero Stop Riflescope, 6-24x50mm, 30mm Tube, MOA Type Reticle, Side Focus, 1/4 Tactical Knobs, Matte
Sightron SIII long range zero stop riflescope, 6-24x50mm specifications: – magnification: 6-24mm – objective diameter: 50mm – tube diameter: 30mm – reticle: MOA type – side focus – 1/4 tactical knobs – coating: multi coating – finish: matte black.
Rifle Scope Product Features
Package Dimensions: 9.779 cm (L) X 12.573 cm (W) X 46.355 cm (H)
Package Type: Sporting Goods
Package Quantity: 1
Country Of Origin: Japan
Model Number: 25168
About the SIGHTRON Brand
SIGHTRON is a premium maker for long gun scopes, optics, mounts, and other components used for firearms like rifles and long guns. They design and manufacture their mounts and related products by applying materials which are durable and long lasting. This includes the SIGHTRON 25168 SIII Long Range Zero Stop Riflescope, 6-24x50mm, 30mm Tube, MOA Type Reticle, Side Focus, 1/4 Tactical Knobs, Matte by SIGHTRON. For more shooting items, visit their website.
Facts About Rifle Scopes
Rifle scopes allow you to precisely align a rifle at various targets by lining up your eye with the target over a distance. They do this through magnification by utilizing a series of lenses within the scope. The scope’s alignment can be adapted to account for various ecological things like wind and elevation to account for bullet drop.
The scope’s function is to help shooters understand precisely where the bullet will hit based on the sight picture you are seeing through the optic as you line up the scope’s crosshair or reticle with the intended point of impact. The majority of modern rifle scopes have about 11 parts which are arranged within and outside of the scope body. These scope parts include the rifle scope’s body, lenses, windage and elevation turrets, focus rings, and other components. See all eleven parts of a rifle scope.
The Styles of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The style of focal plane a scope has identifies where the reticle or crosshair is located relative to the optic’s zoom. It simply suggests the reticle is situated behind or ahead of the magnification lens of the optic. Considering the very best type of rifle scope depends on what variety of hunting or shooting you anticipate doing.
About First Focal Plane Optics
Focal plane scopes (FFP) come with the reticle in front of the magnifying lens. This triggers the reticle to increase in size based upon the amount of zoom being used. The benefit is that the reticle measurements are the same at the amplified distance as they are at the non amplified range. For example, one tick on a mil-dot reticle at 100 yards without “zoom” is still the corresponding tick at one hundred yards using 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away kinds of shooting
- Shooting situations where estimations are minor
- Experienced shooters who have an idea for their target “hold over” as well as “lead” equations for their long guns
- Shooters who do not mind the reticle is enlarged and occupies more visual eyesight area than a SFP reticle
Second Focal Plane Glass
Second focal plane optics (SFP) come with the reticle to the rear of the magnifying lens. This causes the reticle to stay at the same scale relative to the quantity of magnification being used. The final result is that the reticle measurements adapt based upon the zoom chosen to shoot over longer distances given that the reticle measurements represent different increments which vary with the magnification level. In the FFP example with the SFP optic, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick. These particular sorts of scopes work for:
- Far away styles of shooting where shooters have extra time to make ballistic calculations
- Shooting where most of the shots take place within much shorter distances and ranges
- Shooters who desire a clearer optic picture without room taken up by the enlarged FFP reticle
About Rifle Glass Magnification
The amount of scope zoom you require depends upon the sort of shooting you choose to do. Practically every type of rifle glass supplies some level of magnification. The volume of zoom a scope offers is established by the diameter, density, and curvatures of the lenses within the rifle optic. The magnifying level of the scope is the “power” of the scope. This signifies what the shooter is looking at through the scope is amplified times the power factor of what can typically be seen by human eyes.
Fixed Single 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 and the objective lens is 32mm. The zoom of this kind of optic can not adjust considering that it is set from the factory.
Adjustable Power Lens Rifle Glass Details
Variable power rifle scopes can be tweaked between magnified levels. The power modification is accomplished by using the power ring part of the scope near the rear of the scope by the eye bell.
Rifle Glass Power and Range Correlation
Here are some suggested scope power settings and the ranges where they can be effectively used. Remember that higher power optics will not be as efficient as lower powered scope and optics due to the fact that excessive magnification can be a bad thing. The same applies to longer distances where the shooter needs increased power to see exactly where to best aim the rifle at the target.
Lens Covering for Rifle Scopes
All modern-day rifle optic lenses are covered in special coatings. There are various types and qualities of lens coatings. Lens coating can be a crucial element of a rifle’s setup when contemplating high end rifle optics and targeting units. The glass lenses are among the most significant parts of the glass since they are what your eye looks through while sighting a rifle in on the target. The finish on the lenses safeguards the lens surface and also assists with anti glare capabilities from refracted sunshine and color presence.
ED Versus HD Rifle Optics
Some scope brands likewise use “HD” or high-definition lens coatings which use different techniques, polarizations, aspects, and chemicals to draw out different colors and viewable quality through the lens. Some scope makers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Finishing Versus Multi-Coating for Glass
Different optic lenses can also have different coverings applied to them. All lenses typically have at least some type of treatment or covering used to them prior to being used in a rifle scope or optic.
This lens treatment can offer protection to 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 on the scope maker and how much you paid for it.
Some scope producers also make it a point to define if their optic lenses are coated or “multi” covered. Being “better” depends on the maker’s lens treatment innovation and the quality of products used in constructing the rifle scope.
Hydrophobic Lens Finishes
Water on a lens does not help with maintaining a clear sight picture through a scope at all. Numerous top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic anti-water finishing.
Options for Installing Rifle Scopes on Long Guns
Installing solutions for scopes are available in a few choices. There are the basic scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These various types of mounts also generally are made in quick release variations which use throw levers which allow rifle shooters to quickly mount and remove the glass.
Hex Key Rifle Optic Rings
Standard, clamp style mounting scope rings use hex head screws to mount to the flattop style Picatinny scope mount rails on rifles. These types of scope mounts use two separate rings to support the optic, and are often made from 7075 T6 billet aluminum which is developed for long range accuracy shooting. This type of scope install is great for rifles which require a long lasting, rock solid mount which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Rifle Optic Rings
These types of quick-release rifle scope mounts can be used to quickly attach and take off a scope from a rifle. If they all use a similar style mount, multiple scopes can also be switched out in the field. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect tightly to a flat top type Picatinny rail. This allows the scope to be sighted in while on the rifle, removed from the rifle, and remounted while preserving accuracy. These types of mounts come in beneficial for rifles which are moved a lot, to take off the scope from the rifle for protection, or for optics which are utilized in between numerous rifles. An example of this mount style is the 30mm mount designed by Vortex Optics. It typically costs around $250 USD
Rifle Scope Tube Sealing and Gas Purging
Moisture inside your rifle scope can mess up a day of shooting and your costly optic by bringing about fogging and developing residue inside of the scope tube. A lot of scopes prevent wetness from entering the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Rifle Optic Tubes
Another part of avoiding the accumulation of moisture within 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 shifts and pressure variations from the outside environment which might possibly permit water vapor to permeate in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to look for.