Description
Rifle Scope Product Details
U.S. Optics FDN-10X Riflescope, 1.8-10x40mm, 34mm Tube, FFP, JNG MIL Reticle, 1/10 FDN 10X JNG MIL
U.S. Optics FDN-10X Riflescope, 1.8-10x40mm, 34mm Tube, FFP, JNG MIL Reticle, 1/10 MIL Elevation/ Windage Adjustment, Black, Small, FDN 10X JNG MIL
Rifle Scope Product Features
Package Dimensions: 12 L x 3 H x 3 W (inches)
Package Weight : 1 pounds
Country of Origin : China
Color: BLACK
About the U.S. Optics Company
U.S. Optics is a premium maker for long gun scopes, optics, mounting solutions, and other components used for firearms like rifles and long guns. They style and make their scopes and related products working with materials which are long lasting and resilient. This includes the U.S. Optics FDN-10X Riflescope, 1.8-10x40mm, 34mm Tube, FFP, JNG MIL Reticle, 1/10 FDN 10X JNG MIL by U.S. Optics. For more shooting goods, visit their website.
Info About Glass
Rifle scopes allow you to specifically aim a rifle at various targets by lining up your eye with the target at range. They accomplish this through magnification using a series of lenses inside the scope. The scope’s positioning can be dialed in for consideration of many environmental things like wind and elevation decreases to make up for bullet drop.
The scope’s purpose is to help shooters understand precisely where the bullet will hit based on the sight picture you are viewing with the optic as you line up the scope’s crosshair or reticle with the intended target. A lot of contemporary rifle optics have about eleven parts which are found internally and externally on the scope. These optic pieces consist of the rifle scope’s body, lenses, adjustment turrets, focus rings, and other parts. Learn about the eleven parts of rifle scopes.
Rifle Optic Styles
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The style of focal plane a scope has establishes where the reticle or crosshair lies in connection with the optic’s magnifying adjustments. It literally indicates the reticle is located behind or before the magnification lens of the scope. Deciding on the most ideal style of rifle scope is based upon what type of hunting or shooting you intend on doing.
First Focal Plane Glass
Focal plane scopes (FFP) feature the reticle in front of the magnifying lens. This triggers the reticle to increase in size based on the amount of zoom being used. The result is that the reticle measurements are the same at the magnified distance as they are at the non magnified distance. As an example, one tick on a mil-dot reticle at 100 yards without having “zoom” is still the exact same tick at one hundred yards using 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away kinds of shooting
- Shooting circumstances where calculations are very little
- Experienced shooters who have an idea for their aim point “hold over” as well as “lead” equations for their firearm
- Shooters who don’t mind the reticle is bigger and uses up more visual sight area than a SFP reticle
Second Focal Plane Scope Facts
Second focal plane glass (SFP) come with the reticle behind the zoom lens. This causes the reticle to remain at the exact same size in relation to the quantity of magnification being used. The effect is that the reticle measurements adjust based upon the magnification chosen to shoot over lengthier distances since the reticle markings represent various increments which change with the zoom level. In the FFP illustration with the SFP glass, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement. These types of scopes work for:
- Far away types of shooting where shooters have more time to make ballistic computations
- Shooting where most of the shots happen within much shorter ranges and spaces
- Shooters who select a clearer optic picture with less space taken up by the larger size FFP reticle
Optic Zoom
The level of scope zoom you need is based on the form of shooting you want to do. Virtually every style of rifle optic provides some degree of zoom. The level of zoom a scope supplies is established by the diameter, thickness, and curvatures of the lenses within the rifle optic. The magnification level of the optic is the “power” of the scope. This suggests what the shooter is looking at through the scope is amplified times the power aspect of what can generally be seen by human eyes.
Fixed Single Power Lens Scope Details
A single power rifle scope will have 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 type of optic can not fluctuate because it is a fixed power optic.
Info About Variable Power Lens Rifle Optics
Variable power rifle scopes use enhanced power. The power change is handled using the power ring part of the scope near the rear of the scope by the eye bell.
Scope Power Level and Range Correlation
Here are some advised scope power settings and the ranges where they can be successfully used. Remember that high power optics and scopes will not be as practical as lower powered optics due to the fact that too much zoom can be a negative thing in certain situations. The exact same idea relates to extended distances where the shooter needs to have increased power to see precisely where to best aim the rifle.
Optic Lens Covering
All state-of-the-art rifle optic and scope lenses are covered. Lens coating can be a significant element of a shooting platform when considering high end rifle optics and scope setups.
Info on Rifle Optic Lens Coatings – HD Versus ED
Some optic manufacturers will also use “HD” or high-def glass finishings that employ different procedures, chemical applications, polarizations, and components to draw out various colors and viewable target definition through lenses. This high-def covering is typically used with higher density lens glass which lowers light’s chance to refract by means of the lens glass. Some scope makers use “HD” to refer to “ED” indicating extra-low dispersion glass. ED deals with how certain colors are represented on the chromatic spectrum and the chromatic deviance or aberration which is similarly called color distortion or fringing. Chromatic aberration can be obvious around objects with hard edges and outlines as light hits the item from particular angles.
Single Covering Versus Multi-Coating
Different optic lenses can also have different coverings applied to them. All lenses typically have at least some kind of treatment or covering applied to them before they are used in a rifle scope or optic. Due to the fact that the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It becomes part of the carefully tuned optic. It must have a covering placed on it so that it will be efficiently usable in many types of environments, degrees of light (full VS shaded), and other shooting conditions.
This lens treatment can safeguard the lens from scratches while lowering 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 makers similarly make it a point to define if their optic lenses are layered or “multi” covered. Being “better” depends on the producer’s lens treatment technology and the quality of materials used in constructing the rifle scope.
Anti-water Lens Finishes
Water on an optic’s lens does not help with retaining a clear sight picture through an optic at all. Many top of the line and premium optic manufacturers will coat their lenses with a hydrophobic or hydrophilic finishing. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It provides protection for the exterior surfaces of the Steiner optic lens so the water molecules can not bind to it or develop surface tension. The result is that the water beads sheet off of the scope to preserve a clear, water free sight picture.
Alternatives for Installing Rifle Optics on Long Guns
Installing options for scopes are available in a couple of choices. There are the basic scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also normally are made in quick release versions which use manual levers which enable rifle shooters to quickly install and dismount the scope.
Hex Key Glass Rings
Standard, clamp-on design mounting scope rings use hex head screws to position to the flattop design Picatinny scope mounting rails on the tops of rifles. These kinds of scope mounts use a pair of detached rings to support the scope, and are normally made from 7075 T6 billet aluminum or similar materials which are developed for far away precision shooting. This form of scope mount is great for rifle systems which need to have a resilient, unfailing mount which will not shift despite just how much the scope is moved about or jarring the rifle takes. These are the type of mounts you should get for a specialized scope setup on a long distance hunting or interdiction long gun which will hardly ever need to be modified or recalibrated. Blue 242 Loctite threadlocker can additionally be used on the mount’s screws to prevent the hex screws from backing out after they are installed firmly in place. An example of these rings are the 30mm style from the Vortex Optics brand. The set generally costs around $200 USD
Quick-Release Cantilever Scope Rings
These types of quick-release rifle scope mounts can be used to quickly attach and detach a scope from a rifle. A wide range of scopes can also be swapped out if they all use a complementary designed mount. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers fasten tightly to a flat top style Picatinny rail. This enables the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while preserving the original sighting settings. These kinds of mounts come in beneficial for rifles which are carried a lot, to take off the scope glass from the rifle for protection, or for aiming systems which are employed in between several rifles. An example of this mount type is the 30mm mount from the Vortex Optics manufacturer. It usually costs around $250 USD
Info on Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle scope can mess up a day on the range and your pricey optic by inducing fogging and developing residue inside of the scope tube. Many scopes prevent moisture from getting in the scope tube with a series of sealing O-rings which are water resistant. Usually, these optics can be immersed beneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be sufficient moisture avoidance for standard use rifles for hunting and sporting purposes, unless you plan on taking your rifle on boats and are worried about the optic still functioning if it falls overboard and you can still find the firearm.
What to Know About Scope Tube Gas Purging
Another element of preventing the accumulation of wetness inside of the rifle scope tube is filling the tube with a gas like nitrogen. Considering that this area is already occupied by the gas, the glass is less altered by temperature level alterations and pressure variations from the outside environment which may possibly allow water vapor to seep in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to seek out.
