Description
Rifle Scope Product Details
U.S. Optics FDN-25X Riflescope, 5-25x52mm, 34mm Tube, FFP, Horus T-3 Reticle, 1/10 MIL FDN 25X T-3
U.S. Optics FDN-25X Riflescope, 5-25x52mm, 34mm Tube, FFP, HORUS T-3 Reticle, 1/10 MIL Elevation/ Windage Adjustment, Black, Medium, FDN 25X T-3
Rifle Scope Product Features
About the U.S. Optics Brand
U.S. Optics is a premium manufacturer for firearm scopes, optics, mounts, and other components used for guns like rifles and long guns. They create and supply their products choosing materials which are resilient and long lasting. This includes the U.S. Optics FDN-25X Riflescope, 5-25x52mm, 34mm Tube, FFP, Horus T-3 Reticle, 1/10 MIL FDN 25X T-3 by U.S. Optics. For additional shooting goods, visit their website.
What You Need to Know About Rifle Scopes
Rifle scopes permit you to exactly align a rifle at different targets by aligning your eye with the target over a distance. They do this through magnifying the target by using a series of lenses inside the scope. The scope’s positioning can be dialed in for the consideration of varied ecological factors like wind and elevation increases or decreases to account for bullet drop.
The scope’s function is to help the shooter understand exactly where the bullet will land based upon the sight picture you are viewing through the scope as you line up the scope’s crosshair or reticle with the target. Most modern-day rifle scopes have around 11 parts which are found inside and on the exterior of the scope body. These parts consist of the rifle scope’s body, lenses, modification dials or turrets, objective focus rings, and other elements. Learn about the eleven parts of scopes.
About Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The kind of focal plane a scope has determines where the reticle or crosshair lies in connection with the scopes magnifying adjustments. It actually means the reticle is behind or in front of the magnification lens of the optic. Considering the very best style of rifle scope is based on what style of shooting or hunting you plan on undertaking.
First Focal Plane Optics
Focal plane scopes (FFP) feature 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 outcome is that the reticle measurements are the same at the enhanced range as they are at the non magnified range. 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 types of shooting
- Shooting situations where calculations are small
- Experienced shooters who understand their target “hold over” and also “lead” ratios for their long guns
- Shooters who do not mind the reticle is enlarged and takes up more visual eyesight space than a SFP reticle
Info on Second Focal Plane Glass
Second focal plane optics (SFP) feature the reticle behind the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick measurement.
- Long distance forms of shooting where shooters have increased time to make ballistic estimations
- Shooting where most shots take place within much shorter proximities and ranges
- Shooters who choose a clearer optic sight picture with less area taken up by the enlarged FFP reticle
Magnification for Rifle Scopes
The level of scope zoom you need depends upon the sort of shooting you choose to do. Nearly every kind of rifle optic offers some degree of magnification. The volume of zoom a scope supplies is determined by the dimension, thickness, and curves of the lens glass within the rifle scope. The magnifying level of the optic is the “power” of the opic. This implies what the shooter is checking out through the scope is amplified times the power factor of what can generally be seen by human eyes.
About Single Power Lens Rifle Glass
A single power rifle optic will have a zoom number designator like 4×32. This indicates the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of scope can not fluctuate considering that it is a set power scope.
Variable Power Lens Rifle Scope Facts
Variable power rifle scopes have adjustable power. It will note the zoom degree in a format like 2-10×32. These numbers indicate the zoom of the scope can be changed between 2x and 10x power. This additionally utilizes the power levels in-between 2 and 10. The power adjustment is achieved by employing the power ring component of the scope near the back of the scope by the eye bell.
Power and Range
Here are some suggested scope power levels and the ranges where they can be effectively used. High power optics will not be as effective as lower powered rifle scope glass because too much zoom can be a negative aspect depending on your shooting distance. The exact same concept relates to extended distances where the shooter needs to have adequate power to see exactly where to properly aim the rifle.
Optic Lens Coating
All current rifle optic lenses are layered. Lens coating is a vital element of a rifle when purchasing high end rifle optics and scope equipment.
About Lens Coatings – HD Versus ED
Some rifle scope producers will also use “HD” or high-def glass finishes that employ different procedures, rare earth compounds, components, and polarizations to enhance various color ranges and viewable target definition through lenses. This high-def finishing is normally used with increased density glass which brings down light’s capability to refract through the lens glass. Some scope manufacturers use “HD” to describe “ED” meaning extra-low dispersion glass. ED deals with how certain colors are presented on the chroma spectrum and the chromatic aberration or deviance which is similarly called color distortion or fringing. Chromatic aberration is often obvious around things with defined shapes as light hits the item from various angles.
Glass Lens Single Finish Versus Multi-Coating
Various optic lenses can likewise have various coatings used to them. All lenses generally 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 protect the lens from scratches while decreasing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends on the scope producer and how much you paid for it.
Some scope producers likewise make it a point to specify if their optic lenses are coated or “multi” covered. This implies the lens has had numerous treatments applied to the surfaces. If a lens gets several treatments, it can prove that a maker is taking multiple actions to fight different natural elements like an anti-glare covering, a scratch resistant anti-abrasion coating, followed by a hydrophilic covering. This additionally doesn’t necessarily indicate the multi-coated lens is better than a single coated lens. Being “better” depends on the producer’s lens treatment techniques and the quality of components used in building the rifle optic.
Scope Lens Anti-water Coating
Water on a lens doesn’t support maintaining a clear sight picture through an optic whatsoever. Lots of top of the line and high-end optic makers will coat their lenses with a hydrophobic or hydrophilic coating. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It treats the exterior of the Steiner optic lens so the H2O particles can not bind to it or produce surface tension. The outcome is that the water beads move off of the scope to keep a clear, water free sight picture.
Glass Mounting Options
Installing approaches for scopes are available in a few choices. There are the standard scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These different kinds of mounts also normally are made in quick release versions which use manual levers which permit rifle shooters to rapidly mount and dismount the scopes.
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 a couple of separate rings to support the optic, and are made from 7075 T6 billet aluminum which is developed for long distance accuracy shooting. This type of scope install is perfect for rifles which require a long lasting, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Rifle Scope Rings
These kinds of quick-release rifle scope mounts can be used to rapidly take off a scope from a rifle and reattach it to a different rifle. A wide range of scopes can also be switched out if they all use a similar designed mount. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers fasten nicely to a flat top style Picatinny rail. This permits the scope to be sighted in while on the rifle, removed from the rifle, and remounted while retaining precision. These kinds of mounts are useful and practical for rifles which are shipped a lot, to remove the optic from the rifle for protection, or for sight systems which are used in between a number of rifles. An example of this mount type is the 30mm mount designed by Vortex Optics. It typically costs around $250 USD
Sealing and Gas Purging for Scope Tubes
Wetness inside your rifle optic can ruin a day of shooting and your expensive optic by triggering fogging and developing residue inside of the scope tube. Many scopes avoid moisture from entering the scope tube with a system of sealing O-rings which are water resistant.
Optic Gas Purging
Another part of preventing the buildup of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Considering that this space is currently taken up by the gas, the glass is less influenced by condition alterations and pressure distinctions from the external environment which might potentially permit water vapor to leak in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to look for.
