Description
Rifle Scope Product Details
U.S. Optics FDN-25X Riflescope, 5-25x52mm, 34mm Tube, FFP, MGR Reticle, 1/10 MIL FDN 25X MGR
U.S. Optics FDN-25X Riflescope, 5-25x52mm, 34mm Tube, FFP, MGR Reticle, 1/10 MIL Elevation/ Windage Adjustment, Black, Medium, FDN 25X MGR
Rifle Scope Product Features
U.S. Optics FDN-25X Riflescope
5-25x52mm, 34mm Tube
FFP, MGR Reticle
1/10 MIL FDN 25X MGR
About the U.S. Optics Scope Maker
U.S. Optics is a premium company for rifle scopes, optics, mounting solutions, and other add-ons used for guns like rifles and long guns. They design and manufacture their mounts, scopes, and related products by choosing building materials which are long lasting and durable. This includes the U.S. Optics FDN-25X Riflescope, 5-25x52mm, 34mm Tube, FFP, MGR Reticle, 1/10 MIL FDN 25X MGR by U.S. Optics. For additional shooting goods, visit their site.
About Rifle Scopes
Rifle scopes enable you to exactly align a rifle at different targets by lining up your eye with the target over a range. They accomplish this through magnification by making use of a series of lenses within the scope. The scope’s positioning can be adjusted to account for different environmental elements like wind speed and elevation increases or decreases to make up for bullet drop.
The scope’s function is to help the shooter understand precisely where the bullet will hit based on the sight picture you are viewing using the optic as you line up the scope’s crosshair or reticle with the target. A lot of modern rifle scopes have about 11 parts which are arranged internally and externally on the scope body. These optic pieces consist of the rifle scope’s body, lenses, windage dials, objective focus rings, and other parts. Learn about the eleven parts of optics.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Selecting the perfect type of rifle scope is based around what type of shooting you plan on doing.
Info About First Focal Plane Glass
Focal plane scopes (FFP) come with the reticle in front of the zoom lens. This triggers the reticle to increase in size based upon the amount of zoom being used. The result is that the reticle measurements are the same at the amplified range as they are at the non magnified range. One tick on a mil-dot reticle at one hundred yards with no “zoom” is still the same tick at 100 yards by using 5x “zoom”. These kinds of scopes work for:
- Quick acquisition, far away types of shooting
- Shooting circumstances where computations are low
- Experienced shooters who recognize their aim point “hold over” and also “lead” equations for their rifles
- Shooters who do not mind the reticle is bigger and requires more visual sight area than a SFP reticle
Second Focal Plane Optic Info
Second focal plane scopes (SFP) include the reticle behind the magnifying lens. This induces the reticle to stay at the same scale in relation to the level of zoom being used. The outcome is that the reticle measurements shift based upon the zoom employed to shoot over longer ranges due to the fact that the markings present different increments which fluctuate with the magnification level. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick. These varieties of scopes are useful for:
- Long distance types of shooting where shooters have increased time to make ballistic computations
- Shooting where most shots take place within shorter ranges and spaces
- Shooters who would like a clearer optic picture without area used up by the enlarged FFP reticle
Zoom for Rifle Scopes
The measure of scope magnification you need on your optic is based on the kind of shooting you choose to do. Almost every kind of rifle glass delivers some degree of magnification. The volume of magnification a scope supplies is determined by the size, thickness, and curves of the lens glass within the rifle scope. The magnification of the optic is the “power” of the scope. This indicates what the shooter is checking out through the scope is amplified times the power factor of what can usually be seen by human eyes.
Info on Single Power Lens Rifle Optics
A single power rifle optic or scope will have a zoom number designator like 4×32. This means the zoom power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of scope can not change given that it is a fixed power scope.
Adjustable Power Lens Optic Details
Variable power rifle scopes use variable power levels. The power change is performed using the power ring part of the scope near the back of the scope by the eye bell.
Power Levels and Range Correlations
Here are some suggested scope power settings and the ranges where they could be effectively used. Highly magnified glass will not be as useful as lower powered glass because too much magnification can be a negative aspect depending on your shooting distance. The same concept goes for longer distances where the shooter needs to have enough power to see precisely where to best aim the rifle at the target.
Info on Optic Lens Finishes
All modern rifle optic and scope lenses are coated. There are various types and qualities of lens finishings. Lens finishing can be a crucial element of a rifle when looking into high-end rifle optics and scope systems. The lenses are one of the most vital components of the optic considering they are what your eye sees through while sighting a rifle in on the target. The finish on the lenses safeguards the lens exterior and helps with anti glare capabilities from refracted sunlight and color discernibility.
HD Versus ED Lenses
Some scope brands also use “HD” or high-definition lens coverings which use different processes, chemicals, polarizations, and elements to draw out separate colors and viewable quality through the lens. Some scope manufacturers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Rifle Glass Lens Finishing Versus Multi-Coating
Different optic lenses can also have different coverings used to them. All lenses generally have at least some type of treatment or finishing applied to them prior to being used in a rifle scope or optic.
Single covered lenses have a treatment applied to them which is normally a protective and enhancing multi-purpose treatment. This lens treatment can protect the lens from scratches while reducing glare and other less advantageous things experienced in the shooting environment while sighting in with the optic. The quality of a single layered lens depends on the scope maker and how much you spent paying for it. Both the make and cost are indicators of the lens quality.
Some scope manufacturers also make it a point to specify if their optic lenses are covered or “multi” covered. This suggests the lens has numerous treatments applied to the surfaces. If a lens gets numerous treatments, it can establish that a maker is taking several actions to combat different natural aspects like an anti-glare covering, a scratch resistant anti-abrasion coating, followed by a hydrophilic coating. This also doesn’t necessarily suggest the multi-coated lens will perform much better than a single layered lens. Being “better” is dependent on the manufacturer’s lens treatment solutions and the quality of products used in creating the rifle scope.
Hydrophobic Covering for Glass
Water on a lens does not help with keeping a clear sight picture through a scope at all. Lots of top of the line and high-end scope companies will coat their lenses with a hydrophobic or hydrophilic coating.
Options for Installing Rifle Optics on Firearms
Installing solutions for scopes can be found in a few options. There are the standard scope rings which are separately installed to the optic and one-piece mounts which cradle the scope. These different kinds of mounts also generally are made in quick release variations which use throw levers which enable rifle shooters to rapidly install and remove the glass.
Glass Mounts with Hex Key Rings
Standard, clamp style 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 different rings to support the optic, and are often made from 7075 T6 billet aluminum which is created for long distance precision shooting. This type of scope mount is perfect for rifles which need a durable, rock solid mount which will not move no matter how much the scope is moved or abused.
Rifle Optic Mounts with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to rapidly detach a scope and connect it to a different rifle. Multiple scopes can even be swapped out if they all use a similar style mount. These types of mounts are convenient for rifle platforms which are transported a lot, to remove the optic from the rifle for protection, or for scopes which are used between multiple rifles.
Sealing and Gas Purging for Scope Tubes
Wetness inside your rifle glass can destroy a day on the range and your highly-priced optic by resulting in fogging and generating residue within the scope’s tube. The majority of scopes protect against wetness from getting in the optical tube with a series of sealing O-rings which are water resistant. Generally, these water-resistant scopes can be immersed underneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be ample wetness avoidance for conventional use rifles, unless you anticipate taking your rifle on boats and are worried about the scope still performing if it is submerged in water and you can still find the firearm.
Glass Gas Purging
Another part of preventing the buildup of wetness inside of the rifle optic’s tube is filling the tube with a gas like nitrogen. Considering that this area is already occupied by the gas, the scope is less impacted by temperature shifts and pressure variations from the outside environment which may potentially permit water vapor to seep in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.
