Description
Rifle Scope Product Details
U.S. Optics FDNFX-10 Riflescope, 10x40mm, 34mm Tube, FFP, MOA Scale Type 1 Reticle, FDN FX10 MOA
U.S. Optics FDNFX-10 Riflescope, 10x40mm, 34mm Tube, FFP, MOA Scale Type 1 Reticle, 1/4 IPHY Elevation/ Windage Adjustment, Black, Small, FDN FX10 MOA
Rifle Scope Product Features
U.S. Optics FDNFX-10 Riflescope
10x40mm
34mm Tube
FFP, MOA Scale Type 1 Reticle, FDN FX10 MOA
About the U.S. Optics Company
U.S. Optics is a premium company for rifle scopes, optics, mounts, and other add-ons used for guns like rifles and long guns. They style and supply their mounts, scopes, and related products making the most of elements which are durable and long lasting. This includes the U.S. Optics FDNFX-10 Riflescope, 10x40mm, 34mm Tube, FFP, MOA Scale Type 1 Reticle, FDN FX10 MOA by U.S. Optics. For more shooting items, visit their site.
What You Need to Know About Rifle Optics
Rifle scopes enable you to precisely aim a rifle at different targets by lining up your eye with the target at range. They do this through magnification by making use of a set of lenses inside the scope. The scope’s positioning can be adapted for the consideration of different environmental factors like wind speed and elevation decreases to make up for bullet drop.
The scope’s function is to understand precisely where the bullet will land based on the sight picture you are viewing through the optic as you line up the scope’s crosshair or reticle with the intended point of impact. Most contemporary rifle optics have about eleven parts which are arranged internally and outside of the optic. These optic pieces consist of the rifle scope’s body, lenses, modification dials or turrets, focus rings, and other components. Learn about the eleven parts of rifle glass.
Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Going for the optimal type of rifle glass is based on what type of shooting you plan on doing.
About First Focal Plane Scopes
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These styles of scopes are useful for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where estimations are minimal
- Experienced shooters who have an idea for their target “hold over” and “lead” ratios for their rifles
- Shooters who do not mind the reticle is enlarged and occupies more visual eyesight area than a SFP reticle
Second Focal Plane Scope Facts
Second focal plane scopes (SFP) come with the reticle to the rear of the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick reticle measurement.
- Far away kinds of shooting where shooters have additional time to make ballistic calculations
- Shooting where most of the shots happen within much shorter spaces and ranges
- Shooters who prefer a clearer optic picture with less room used up by the larger size FFP reticle
Magnification for Rifle Scopes
The amount of magnification a scope provides is determined 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 Power Lens Rifle Optics
A single power rifle optic uses 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 magnification of this kind of optic can not fluctuate given that it is a fixed power scope.
Adjustable Power Lens Rifle Glass
Variable power rifle scopes use enhanced power. The power adjustment is accomplished by making use of the power ring part of the scope near the back of the scope by the eye bell.
Rifle Glass Power Level and Ranges
Here are some suggested scope power settings and the distances where they could be successfully used. Highly magnified rifle scope glass will not be as useful as lower powered scopes because too much magnification can be a negative aspect depending on your shooting distance. The exact same concept applies to extended distances where the shooter needs enough power to see where to best aim the rifle.
Lens Finish for Rifle Glass
All modern rifle optic lenses are layered. There are various types and qualities of glass lens finishes. When shopping for luxury rifle optical units, Lens finishing can be a significant component of defining the capability of the rifle. The lenses are among the most important parts of the optic because they are what your eye sees through while sighting a rifle in on the point of impact. The coating on the lenses shields the lens surface area as well as assists with anti glare from refracted sunrays and color recognition.
Details on Lens Coatings – HD Versus ED
Some scope makers also use “HD” or high-definition lens finishes which use various techniques, chemicals, aspects, and polarizations to draw out different colors and viewable definition through the lens. Some scope manufacturers use “HD” to refer to “ED” implying extra-low dispersion glass.
Single Finish Versus Multi-Coating for Scopes
Various optic lenses can also have different coatings applied to them. All lenses typically have at least some kind of treatment or finish applied to them before they are used in a rifle scope or optic. This is since the lens isn’t just a raw piece of glass. It becomes part of the finely tuned optic. It requires a coating to be applied to it so that it will be optimally functional in many kinds of environments, degrees of sunlight (full light VS shade), and other shooting conditions.
Single coated lenses have a treatment applied to them which is generally a protective and enhancing multi-purpose treatment. This lens treatment can protect the lens from scratches while minimizing glare and other less useful things experienced in the shooting environment while sighting in with the optic. The quality of a single layered lens depends upon the scope developer and how much you spent on it. Both the make and cost are indications of the lens quality.
Some scope makers also make it a point to define if their optic lenses are covered or “multi” covered. Being “much better” depends on the producer’s lens treatment innovation and the quality of materials used in developing the rifle scope.
Hydrophobic Covering for Rifle 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 optic makers will coat their lenses with a hydrophilic or hydrophobic coating.
Rifle Glass Mounting Choices
Mounting approaches for scopes can be found in a couple of options. There are the basic scope rings which are individually installed to the scope and one-piece scope mounts which cradle the scope. These various kinds of mounts also generally come in quick release variations which use toss levers which permit rifle operators to rapidly install and dismount the scopes.
Hex Key Glass Rings
Basic, clamp style mounting scope rings use hex head screws to fix to the flattop style Picatinny scope mounting rails on the tops of rifles. These varieties of scope mounts use a pair of independent rings to support the optic, and are made from 7075 T6 billet aluminum or similar materials which are developed for long distance precision shooting. This form of scope mount is exceptional for rifle systems which are in need of a durable, rock solid mount which will not shift despite just how much the scope is moved or jarring the rifle takes. These are the style of mounts you really want to have for a dedicated scope system on a far away scouting or interdiction firearm that will almost never need to be altered or recalibrated. Blue 242 Loctite threadlocker can additionally be used on screws to stop the hex screws from wiggling out after they are installed tightly in place. An example of these rings are the 30mm type made by the Vortex Optics brand. The set generally costs around $200 USD
Quick-Release Cantilever Rifle Optic Ring Mounting Solutions
These kinds of quick-release rifle scope mounts can be used to quickly remove a scope from a rifle and reattach it to a different rifle. Multiple scopes can also be swapped out if they all use a similar style mount. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers connect nicely to a flat top design Picatinny rail. This permits the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while keeping the original sighting settings. These types of mounts are useful and handy for shooting platforms which are moved around a lot, to remove the scope from the rifle for protection, or for scopes which are employed in between multiple rifles. An example of this mount style is the 30mm mount designed by Vortex Optics. It usually costs around $250 USD
What to Know About Scope Tube Sealing and Gas Purging
Wetness inside your rifle glass can wreck a day on the range and your expensive optic by resulting in fogging and creating residue inside of the scope’s tube. The majority of optics protect against humidity from getting in the optical tube with a series of sealing O-rings which are water resistant. Typically, these water-resistant scopes can be immersed within 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be ample wetness prevention for basic use rifles for hunting and sporting purposes, unless you plan on taking your rifle boating and are worried about the scope still performing if it goes overboard and you can still rescue the rifle.
Rifle Glass Gas Purging
Another component of avoiding the accumulation of wetness inside of the rifle optic’s 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 impacted by temperature shifts and pressure distinctions from the external environment which could potentially enable water vapor to leak in around the seals to fill the void which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
