Description
Rifle Scope Product Details
US Optics FDN 17x 3.2-17x50mm; 34MM Tube; Digital Red FFP Horus H59 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 H59 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 Brand
U.S. Optics is a premium producer for firearm scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They design and make their mounts and related products making the most of building materials which are long lasting and durable. This includes the US Optics FDN 17x 3.2-17x50mm; 34MM Tube; Digital Red FFP Horus H59 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 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 at range. They do this through magnification by utilizing a series of lenses inside the scope. The scope’s positioning can be adapted to account for various natural aspects like wind and elevation decreases to make up for bullet drop.
The scope’s function is to understand precisely where the bullet will hit based upon the sight picture you are seeing through the optic as you line up the scope’s crosshair or reticle with the intended target. A lot of modern rifle scopes and optics have about 11 parts which are arranged inside and outside of the scope. These scope parts include the rifle scope’s body, lenses, windage dials or turrets, focus rings, and other elements. Learn about the eleven parts of scopes.
About Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Opting for the optimal type of rifle glass is based on what type of shooting you plan on doing.
First Focal Plane Scopes
Focal plane scopes (FFP) come with the reticle in front of the magnifying lens. This triggers the reticle to increase in size based on the level of zoom being used. The benefit is that the reticle measurements are the same at the enhanced distance as they are at the non magnified distance. As an example, one tick on a mil-dot reticle at 100 yards without any “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 scenarios where estimations are very little
- Experienced shooters who understand their aim point “hold over” plus “lead” equations for their rifles
- Shooters who do not mind the reticle is bigger and requires more visual sight room than a SFP reticle
Second Focal Plane Glass Facts
Second focal plane optics (SFP) feature the reticle behind the zoom lens. This triggers the reticle to remain at the very same overall size in connection with the amount of zoom being used. The end result is that the reticle dimensions adjust based upon the zoom used to shoot over greater ranges given that the reticle markings represent various increments which change with the zoom. In the FFP example with the SFP glass, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick reticle measurement. These particular types of scopes are useful for:
- Long distance kinds of shooting where shooters have increased time to make ballistic computations
- Shooting where most of the shots take place within shorter ranges and spaces
- Shooters who like a clearer optic sight picture with less area used up by the larger sized FFP reticle
Rifle Optic Magnification
The level of scope zoom you need depends on the kind of shooting you would like to do. Pretty much every type of rifle glass offers some amount of magnification. The quantity of magnification a scope delivers is determined by the diameter, thickness, and curves of the lenses within the rifle scope. The magnification level 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 normally be seen by human eyes.
Single Power Lens Rifle Optic Details
A single power rifle optic or scope uses a zoom number designator like 4×32. This means the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of optic can not adjust considering that it is a fixed power scope.
About Variable Power Lens Optics
Variable power rifle scopes can be adjusted between magnification increments. These types of scopes will note the zoom degree in a format like 2-10×32. These numbers imply the zoom of the scope can be changed in between 2x and 10x power. This also incorporates the power levels in-between 2 and 10. The power adjustment is achieved utilizing the power ring component of the scope near the rear of the scope by the eye bell piece.
Scope Power and Ranges
Here are some suggested scope power settings and the ranges where they can be efficiently used. Bear in mind that high magnification optics and scopes will not be as effective as lower powered scope and optics because too much zoom can be a detractor. The same concept goes for extended ranges where the shooter needs enough power to see exactly where to best aim the rifle at the target.
Details on Rifle Optic Lens Coverings
All modern-day rifle optic lenses are covered in special coatings. There are various types and qualities of finishes. Lens coating is an important aspect of a rifle’s setup when looking at luxury rifle optics and targeting systems. The glass lenses are among the most vital pieces of the scope 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 surface area and even improves anti glare capabilities from refracted sunlight and color visibility.
ED Versus HD Rifle Glass
Some scope producers also use “HD” or high-definition lens finishings which use various techniques, polarizations, elements, and chemicals to draw out various colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” to signify the lens has extra-low dispersion glass.
Single Finish Versus Multi-Coating for Optics
Different optic lenses can also have various coverings applied to them. All lenses typically have at least some type of treatment or coating used to them prior to being used in a rifle scope or optic.
Single layered lenses have a treatment applied to them which is usually a protective and improving multi-purpose treatment. This lens treatment can preserve the lens from scratches while lowering glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single coated lens depends upon the scope manufacturer and the amount you spent on it. Both are indications of the lens quality.
Some scope producers likewise make it a point to define if their optic lenses are coated or “multi” covered. This suggests the lens has had multiple treatments applied to the surfaces. If a lens receives numerous treatments, it can establish that a manufacturer is taking several actions to combat various natural aspects like an anti-glare finish, a scratch resistant anti-abrasion coating, followed by a hydrophilic covering. This additionally does not always indicate the multi-coated lens will perform much better than a single layered lens. Being “much better” depends on the maker’s lens treatment technology and the quality of components used in developing the rifle glass.
Rifle Scope Lens Hydrophobic Finishing
Water on a lens does not help with keeping a clear sight picture through a scope at all. Many top of the line and high-end optic companies will coat their lenses with a hydrophobic or hydrophilic anti-water finish.
Glass Mounting Alternatives
Mounting 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 various kinds of mounts also normally are made in quick release variations which use manual levers which enable rifle shooters to quickly mount and dismount the optics.
Hex Key Rifle Glass Ring Mounts
Standard, clamp design mounting scope rings use hex head screws to mount to the flattop design Picatinny scope mount rails on rifles. These forms of scope mounts use double detached rings to support the optic, and are usually constructed from 7075 T6 billet aluminum or similar materials which are made for long distance accuracy shooting. This form of scope mount is exceptional for rifle systems which require a resilient, rock solid mount which will not move no matter 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 faithful scope setup on a long distance hunting or hard target interdiction rifle that will hardly ever need to be changed or recalibrated. Blue 242 Loctite threadlocker can additionally be used on the scope mount screws to protect against the hex screws from wiggling out after they are mounted firmly in place. An example of these rings are the 30mm style made by the Vortex Optics company. The set normally costs around $200 USD
Quick-Release Cantilever Glass Ring Mounting Solutions
These types of quick-release rifle scope mounts can be used to rapidly remove a scope and connect it to a different rifle. Several scopes can even be swapped out if they all use a similar style mount. These types of mounts come in handy for rifles which are carried a lot, to remove the optic from the rifle for protection, or for optics which are used in between multiple rifles or are situationally focused.
Sealing and Gas Purging for Optic Tubes
Moisture inside your rifle optic can destroy a day on the range and your pricey optic by causing fogging and developing residue within the scope tube. The majority of optics protect against wetness from getting in the optical tube with a system of sealing O-rings which are water resistant. Usually, these water-resistant optics can be submerged underneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be plenty of humidity avoidance for common use rifles, unless you plan on taking your rifle on boats and are worried about the optic still working if it goes overboard and you can still recover the gun.
What to Know About Glass Tube Gas Purging
Another part of avoiding the accumulation of moisture within the rifle optic tube is filling the tube with a gas like nitrogen. Considering that this space is already taken up by the gas, the optic is less influenced by temperature shifts and pressure variations from the external environment which may potentially permit water vapor to seep in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.
