Description
Rifle Scope Product Details
US Optics FDN 17x 3.2-17x50mm; 34MM Tube; Digital Red FFP Horus T-3 Reticle; 110 Click ER3K with 1/10 MIL Adjustments; 48 Click US#1 Windage Knob with 1/10 MIL Adjustments
US Optics FDN 17x 3.2-17x50mm; 34MM Tube; Digital Red FFP HORUS T-3 Reticle; 110 Click ER3K with 1/10 MIL Adjustments; 48 Click US#1 Windage Knob with 1/10 MIL Adjustments
Rifle Scope Product Features
About the U.S. Optics Scope Maker
U.S. Optics is a premium maker for long gun scopes, optics, mounts, and other accessories used for firearms like rifles and long guns. They design and make their mounts, scopes, and related products by making the most of materials which are durable and long lasting. This includes the US Optics FDN 17x 3.2-17x50mm; 34MM Tube; Digital Red FFP Horus T-3 Reticle; 110 Click ER3K with 1/10 MIL Adjustments; 48 Click US#1 Windage Knob with 1/10 MIL Adjustments by U.S. Optics. For more shooting items, visit their website.
Rifle Scope Facts
Rifle scopes permit you to exactly align a rifle at various targets by lining up your eye with the target over a distance. They accomplish this through magnifying the target by making use of a set of lenses inside the scope. The scope’s alignment can be adjusted for consideration of separate ecological things like wind speed and elevation decreases to make up for bullet drop.
The scope’s purpose is to understand precisely 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 intended point of impact. The majority of contemporary rifle scopes and optics have about eleven parts which are arranged within and on the exterior of the scope. These optic pieces include the rifle scope’s body, lenses, windage and elevation dials or turrets, objective focus rings, and other elements. Learn about the eleven parts of glass.
Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The form of focal plane a scope has determines where the reticle or crosshair is located relative to the optic’s magnification. It simply indicates the reticle is located behind or ahead of the magnification lens of the optic. Choosing the most desired form of rifle glass is dependent on what kind of shooting or hunting you anticipate undertaking.
Info About First Focal Plane Scopes
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These kinds of scopes are beneficial for:
- Quick acquisition, long distance types of shooting
- Shooting situations where calculations are low
- Experienced shooters who know their aim point “hold over” as well as “lead” equations for their rifles
- Shooters who don’t mind the reticle is bigger and occupies more visual sight space than a SFP reticle
About Second Focal Plane Scopes
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” one hundred yard tick measurement would be 1/5th of the non “zoom” tick measurement.
- Far away forms of shooting where shooters have extra time to make ballistic estimations
- Shooting where most of the shots happen within much shorter ranges and distances
- Shooters who would like a clearer optic sight picture with less area used up by the larger sized FFP reticle
Details on Rifle Scope Zoom
The amount of scope zoom you need on your optic depends on the kind of shooting you intend to do. Nearly every type of rifle optic delivers some degree of magnification. The volume of magnification a scope supplies is established by the diameter, density, and curvatures of the lens glass inside of the rifle scope. The magnification of the optic is the “power” of the glass. This implies what the shooter is aiming at through the scope is amplified times the power factor of what can typically be seen by human eyes.
About Fixed Power Lens Optics
A single power rifle optic or scope uses a magnification number designator like 4×32. This indicates the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of scope can not fluctuate since it is fixed.
Adjustable Power Lens Rifle Glass
Variable power rifle scopes can be tweaked between magnified levels. The power change is handled using the power ring part of the scope near the rear of the scope by the eye bell.
Rifle Scope Power Level and Ranges
Here are some suggested scope power settings and the ranges where they can be effectively used. Remember that high power scopes will not be as efficient as lower magnification level optics because increased magnification can be a detractor. The same concept applies to extended distances where the shooter needs to have adequate power to see exactly where to properly aim the rifle at the target.
Lens Finish for Scopes
All top of the line rifle optic lenses are covered. Lens coating can be a crucial aspect of a shooting platform when buying high end rifle optics and scope equipment.
Info on Lens Coatings – HD Versus ED
Some scope manufacturers also use “HD” or high-definition lens finishings which use various processes, chemicals, aspects, and polarizations to draw out various colors and viewable quality through the lens. Some scope producers use “HD” to refer to “ED” to signify the lens has extra-low dispersion glass.
Single Rifle Optic Lens Coating Versus Multi-Coating
Various optic lenses can likewise have different coatings applied to them. All lenses usually have at least some type of treatment or covering applied to them before being used in a rifle scope or optic.
Single covered lenses have a treatment applied to them which is usually a protective and enhancing multi-purpose treatment. This lens treatment can safeguard the lens from scratches while lowering glare and other less helpful 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 just how much you spent on it. Both the make and cost are signs of the lens quality.
Some scope makers also make it a point to define if their optic lenses are layered or “multi” covered. This suggests the lens has had several treatments applied to the surfaces of the glass. If a lens gets multiple treatments, it can indicate that a manufacturer is taking numerous actions to combat different natural factors like an anti-glare coating, a scratch resistant anti-abrasion finishing, followed by a hydrophilic coating. This also does not necessarily imply the multi-coated lens will perform better than a single coated lens. Being “much better” depends upon the maker’s lens treatment technology and the quality of components used in building the rifle glass.
Rifle Glass Lens Anti-water Finish
Water on an optic’s lens doesn’t help with keeping a clear sight picture through a scope whatsoever. Numerous top of the line and high-end optic manufacturers will coat their lenses with a hydrophilic or hydrophobic finish. The Steiner Optics Nano-Protection is a good example of this sort of treatment. It treats the exterior of the Steiner scope lens so the H2O molecules can not bind to it or produce surface tension. The outcome is that the water beads slide off of the scope to keep a clear, water free sight picture.
Scope Installation Choices
Installing options for scopes come in a couple of choices. There are the standard scope rings which are individually installed to the optic and one-piece mounts which cradle the scope. These different types of mounts also typically come in quick release variations which use manual levers which enable rifle operators to quickly mount and remove the scope.
Hex Key Optic Rings
Basic, clamp-on style mounting scope rings use hex head screws to fix to the flattop style Picatinny scope mounting rails on the tops of rifles. These styles of scope mounts use two independent rings to support the scope, and are normally made from 7075 T6 billet aluminum which are developed for long distance precision shooting. This type of scope mount is very good for rifles which are in need of a durable, rock solid mount which will not move despite how much the scope is moved about or jarring the rifle takes. These are the style of mounts you really want to have for a specialized scope setup on a far away scouting or hard target interdiction rifle which will almost never need to be altered or recalibrated. Blue 242 Loctite threadlocker can also be used on the mount screws to prevent the hex screws from backing out after they are mounted securely in place. An example of these mounting rings are the 30mm style made by Vortex Optics. The set usually costs around $200 USD
Rifle Scope Mounting Solutions with Quick-Release Cantilever Rings
These types 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. If they all use a comparable style mount, a number of scopes can also be swapped in the field. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers connect solidly 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 maintaining precision. These types of mounts are useful and handy for shooting platforms which are carried a lot, to take off the scope from the rifle for protection, or for scopes which are adopted between numerous rifles. An example of this mount type is the 30mm mount from the Vortex Optics manufacturer. It usually costs around $250 USD
What to Know About Glass Tube Sealing and Gas Purging
Wetness inside your rifle glass can wreck a day on the range and your pricey optic by causing fogging and creating residue within the scope’s tube. The majority of scopes protect against moisture from going into the scope tube with a system of sealing O-rings which are waterproof. Generally, these scopes can be immersed under 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be more than enough wetness avoidance for basic use rifles, unless you intend on taking your rifle aboard watercrafts and are concerned about the optic still functioning if it is submerged in water and you can still recover the firearm.
Gas Purged Rifle Glass Tubes
Another element of preventing the buildup of moisture within the rifle optic’s tube is filling the tube with a gas like nitrogen. Given that this area is already taken up by the gas, the scope is less affected by temperature level changes and pressure differences from the external environment which could potentially permit water vapor to permeate in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a good rifle scope to look for.
