Description
Rifle Scope Product Details
U.S. Optics FDN-17X Riflescope, 3.2-17x50mm, 34mm Tube, FFP, IGR Reticle, 1/4 IPHY FDN 17X IGR
U.S. Optics FDN-17X Riflescope, 3.2-17x50mm, 34mm Tube, FFP, IGR Reticle, 1/4 IPHY Elevation/ Windage Adjustment, Black, Medium, FDN 17X IGR
Rifle Scope Product Features
U.S. Optics FDN-17X Riflescope
3.2-17x50mm, 34mm Tube
FFP, IGR Reticle, 1/4 IPHY FDN 17X IGR
About the U.S. Optics Scope Maker
U.S. Optics is a premium supplier for firearm scopes, optics, mounts, and other components used for guns like rifles and long guns. They design and manufacture their products by choosing materials which are long lasting and resilient. This includes the U.S. Optics FDN-17X Riflescope, 3.2-17x50mm, 34mm Tube, FFP, IGR Reticle, 1/4 IPHY FDN 17X IGR by U.S. Optics. For additional shooting goods, visit their website.
What You Need to Know About Rifle Glass
Rifle scopes permit you to precisely aim a rifle at various targets by aligning your eye with the target at range. They do this through magnifying the target by using a set of lenses inside the scope. The scope’s positioning can be dialed in for the consideration of varied environmental factors like wind and elevation increases 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 via the scope as you line up the scope’s crosshair or reticle with the intended target. Most contemporary rifle optics have about eleven parts which are found within and on the exterior of the scope body. These optic pieces include the rifle scope’s body, lenses, modification turrets or dials, focus rings, and other elements. See all eleven parts of a rifle scope.
Rifle Optic Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Going for the optimal type of rifle scope is based around what type of shooting you plan to do.
First Focal Plane Scope Details
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These kinds of scopes are beneficial for:
- Quick acquisition, far away types of shooting
- Shooting situations where calculations are minimal
- Experienced shooters who have an idea for their aim point “hold over” and also “lead” relationships for their rifles
- Shooters who do not mind the reticle is bigger and takes up more visual eyesight room than a SFP reticle
Info About Second Focal Plane Optics
Second focal plane scopes (SFP) feature the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick.
- Long distance kinds of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots occur within much shorter proximities and ranges
- Shooters who select a clearer optic sight picture with less area taken up by the enlarged FFP reticle
Magnification for Glass
The level of scope magnification you need on your glass depends upon the kind of shooting you want to do. Nearly every type of rifle scope gives some degree of magnification. The level of magnification a scope supplies is established by the diameter, density, and curves of the lenses within the rifle scope. The zoom of the scope is the “power” of the scope. This implies what the shooter is looking at through the scope is amplified times the power factor of what can typically be seen by human eyes.
About Single Power Lens Rifle Scopes
A single power rifle optic uses a magnification number designator like 4×32. This indicates the zoom power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of optic can not change given that it is a fixed power optic.
Adjustable Power Lens Optic Info
Variable power rifle scopes can be tweaked between magnified settings. The power adjustment is accomplished using the power ring part of the scope near the back of the scope by the eye bell.
Rifle Optic Power and Range Correlation
Here are some advised scope powers and the ranges where they may be successfully used. Highly magnified rifle scope glass will not be as effective as lower magnification optics given that too much zoom can be a bad thing. The same applies to extended distances where the shooter needs to have enough power to see exactly where to best aim the rifle.
About Lens Coatings
All contemporary rifle optic lenses are covered in special coatings. There are various types and qualities of glass finishes. When considering high end rifle optics and scope units, Lens finish can be a significant element of a rifle. The lenses are one of the most significant parts of the glass considering they are what your eye sees through while sighting a rifle in on the point of impact. The coating on the lenses offers protection to the lens exterior and even helps with anti glare capabilities from refracted sunrays and color profiles.
About Lens Coatings – HD Versus ED
Some scope manufacturers likewise use “HD” or high-definition lens coatings which use different methods, chemicals, aspects, and polarizations to draw out various colors and viewable quality through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Glass Lens Single Covering Versus Multi-Coating
Various optic lenses can even have various coverings applied to them. All lenses typically have at least some kind of treatment or finishing applied to them prior to being used in a rifle scope or optic. This is because the lens isn’t simply a raw piece of glass. It is part of the finely tuned optic. It requires a coating to be applied to it so that it will be efficiently functional in lots of kinds of environments, degrees of light (full VS shade), and other shooting conditions.
This lens treatment can safeguard the lens from scratches while reducing glare and other less helpful things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope makers also make it a point to specify if their optic lenses are coated or “multi” covered. Being “better” depends on the producer’s lens treatment technology and the quality of products used in building the rifle scope.
Hydrophobic Finishing for Rifle Glass
Water on an optical lens does not improve preserving a clear sight picture through an optic whatsoever. Lots of top of the line or premium optic manufacturers will coat their lenses with a hydrophilic or hydrophobic finishing. The Steiner Optics Nano-Protection is a good example of this sort of treatment. It deals with the exterior surfaces of the Steiner glass lens so the H2O particles can not bind to it or develop surface tension. The outcome is that the water beads slide off of the scope to maintain a clear, water free sight picture.
Glass Installation Choices
Installing options for scopes are available in a few choices. There are the standard scope rings which are separately mounted to the scope and one-piece scope mounts which cradle the scope. These different types of mounts also normally can be found in quick release variations which use throw levers which enable rifle shooters to rapidly mount and dismount the optics.
Hex Key Rifle Optic Rings
Normal, clamp design 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 two different 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 mount is fine for rifles which need a durable, rock solid mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Scope Mounts with Quick-Release Cantilever Rings
These kinds of quick-release rifle scope mounts can be used to quickly connect and detach a scope from a rifle. Several scopes can also be switched out if they all use a complementary designed mount. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers attach securely to a flat top type 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 maintaining the original sighting settings. These types of mounts come in handy for rifles which are moved around a lot, to take off the scope from the rifle for protection, or for optics which are employed in between several rifles. An example of this mount style is the 30mm mount from Vortex Optics. It generally costs around $250 USD
Sealing and Gas Purging for Rifle Scope Tubes
Wetness inside your rifle optic can mess up a day of shooting and your expensive optic by bringing about fogging and creating residue inside of the scope tube. A lot of scopes prevent wetness from going into the scope tube with a system of sealing O-rings which are waterproof.
Scope Gas Purging
Another element of avoiding the buildup of wetness within the rifle optic tube is filling the tube with a gas like nitrogen. Given that this area is currently taken up by the gas, the scope is less impacted by climate alterations and pressure distinctions from the external environment which could possibly permit water vapor to permeate in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.
