Last update on June 30, 2022 // Source: Amazon API
Rifle Scope Product Details
Nightforce Optics 5-25×56 ATACR Riflescope, Matte Black with F1 DigIllum Illuminated First Focal Plane MOAR Reticle, Side Parallax Focus, 34mm Tube Diameter
NightForce ATACR 5-25x56mm F1 ZeroStop .250 MOA DigIllum PTL MOAR, Black, 34mm C545
Rifle Scope Product Features
Internal Adjustments: Elev- 89MOA/26 MIL, Wind-60MOA/ 18MIL
Tube Diameter: 34mm
Eye Relief: 3.54 inch
Mounting Length (inches/mm): 6.3/160
Weight (ounce/gram): 30/850
About the NightForce Brand
NightForce is a premium maker for weapon scopes, optics, mounts, and other accessories used for guns like rifles and long guns. They create and supply their scopes, mounts, and related products by applying elements which are long lasting and durable. This includes the Nightforce Optics 5-25×56 ATACR Riflescope, Matte Black with F1 DigIllum Illuminated First Focal Plane MOAR Reticle, Side Parallax Focus, 34mm Tube Diameter by NightForce. For more shooting products, visit their site.
About Rifle Glass
Rifle scopes enable you to exactly aim a rifle at various targets by lining up your eye with the target over a range. They accomplish this through zoom by making use of a series of lenses within the scope. The scope’s alignment can be dialed in for the consideration of varied natural elements like wind and elevation decreases to account for bullet drop.
The scope’s purpose is to understand exactly where the bullet will hit based upon the sight picture you are seeing with the optic as you line up the scope’s crosshair or reticle with the target. Most modern rifle optics have about 11 parts which are arranged inside and on the exterior of the scope. These optic pieces consist of the rifle scope’s body, lenses, elevation turrets or dials, objective focus rings, and other parts. See all eleven parts of scopes.
The Styles of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The type of focal plane a scope has determines where the reticle or crosshair lies in connection with the scopes zoom. It literally indicates the reticle is situated behind or ahead of the magnifying lens of the optic. Choosing the most effective type of rifle optic is based upon what variety of shooting or hunting you plan on undertaking.
First Focal Plane Glass
Focal plane scopes (FFP) feature the reticle in front of the magnifying lens. This causes the reticle to increase in size based on the amount of magnification being used. The result is that the reticle measurements are the same at the magnified distance as they are at the non magnified range. For example, one tick on a mil-dot reticle at one hundred yards without having “zoom” is still the same tick at one hundred yards using 5x “zoom”. These types of scopes are beneficial for:
- Quick acquisition, long distance types of shooting
- Shooting situations where computations are minor
- Experienced shooters who understand their aim point “hold over” plus “lead” relationships for their long guns
- Shooters who do not mind the reticle is enlarged and occupies more visual eyesight area than a SFP reticle
About Second Focal Plane Scopes
Second focal plane scopes (SFP) feature 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.
- Long distance types of shooting where shooters have extra time to make ballistic calculations
- Shooting where most shots occur within shorter distances and ranges
- Shooters who desire a clearer optic sight picture with less space used up by the larger sized FFP reticle
Zoom for Rifle Glass
The quantity of magnification a scope provides is identified by the diameter, thickness, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
About Fixed Power Lens Rifle Optics
A single power rifle optic or scope comes with a zoom number designator like 4×32. This suggests the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this type of scope can not adjust since it is fixed.
Adjustable Power Lens Rifle Optics
Variable power rifle scopes use variable power levels. The power modification is performed by using the power ring part of the scope near the rear of the scope by the eye bell.
Power and Range Correlations
Here are some recommended scope powers and the distances where they may be effectively used. Remember that high magnification scopes and optics will not be as efficient as lower powered scope and optics because too much zoom can be a detractor. The exact same idea relates to longer distances where the shooter needs to have sufficient power to see where to best aim the rifle at the target.
Info on Scope Lens Finish
All top teir rifle optic and scope lenses are layered. Lens finishing can be a vital aspect of a shooting platform when considering high end rifle optics and scope systems.
ED Versus HD Scopes
Some rifle glass companies also use “HD” or high-definition lense coverings which use different processes, components, rare earth compounds, and polarizations to extract a wide range of color ranges and viewable target definition through the lens. This high-definition coating is normally used with more costly, high density lens glass which drops light’s ability to refract through the lens glass. Some scope makers use “HD” to describe “ED” suggesting extra-low dispersion glass. ED handles how colors are presented on the chromatic spectrum and the chromatic aberration which is similarly called color distortion or fringing. Chromatic aberration may be noticeable over things with hard outlines as light hits the item from specific angles.
Details on Single Covering Versus Multi-Coating
Different scope lenses can even have various finishings applied to them. All lenses typically have at least some kind of treatment or coating 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 is part of the finely tuned optic. It requires a coating to be applied to it so that it will be optimally usable in numerous kinds of environments, degrees of sunshine (full light VS shaded), and other shooting conditions.
Single covered lenses have a treatment applied to them which is generally a protective and enhancing multi-purpose treatment. This lens treatment can shield the lens from scratches while minimizing glare and other less helpful things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends upon the scope company and how much money you paid for it. Both the make and cost are signs of the lens quality.
Some scope producers also make it a point to specify if their optic lenses are layered or “multi” coated. Being “better” depends on the manufacturer’s lens treatment technology and the quality of materials used in constructing the rifle scope.
Hydrophobic Lens Finishing
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 scope makers will coat their lenses with a hydrophobic or hydrophilic anti-water finishing.
Options for Mounting Rifle Glass on Long Guns
Mounting options for scopes can be found in a couple of options. There are the basic scope rings which are separately installed to the optic and one-piece scope mounts which cradle the scope. These various types of mounts also generally are made in quick release versions which use toss levers which permit rifle shooters to quickly mount and dismount the glass.
Hex Key Optic Rings
Normal, clamp style mounting scope rings use hex head screws to mount to the flattop design Picatinny scope installation rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are often made from 7075 T6 billet aluminum which are created for long range accuracy shooting. This type of scope install is fine for rifles which need a resilient, rock solid mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Rifle Optic Rings
These kinds of quick-release rifle scope mounts can be used to quickly detach a scope from a rifle and reattach it to a different rifle. If they all use a comparable design mount, multiple scopes can also be switched out on the range. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers connect firmly to a flat top style Picatinny rail. This permits the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while maintaining accuracy. These kinds of mounts come in beneficial for rifles which are transferred a lot, to remove the scope glass from the rifle for protection, or for sight systems which are used between several rifles. An example of this mount type is the 30mm mount designed by the Vortex Optics manufacturer. It normally costs around $250 USD
Sealing and Gas Purging for Scope Tubes
Moisture inside your rifle scope can ruin a day of shooting and your pricey optic by bringing about fogging and producing residue inside of the scope tube. Most scopes avoid moisture from entering the scope tube with a system of sealing O-rings which are water resistant.
Details on Rifle Scope Tube Gas Purging
Another element of avoiding the buildup of moisture inside of the rifle optic 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 altered by temperature level shifts and pressure variations from the outdoor environment which could potentially allow 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.