Last update on May 17, 2022 // Source: Amazon API
Rifle Scope Product Details
Valdada Crusader 5.8 40 x 56 FFP Scope New Mil/Mil
THE ALL NEW 40mm 5.8-40×56 IS THE SCOPE THAT NONE CAN COMPETE WITH! THIS MARVEL OF OPTICAL ENGINEERING BOASTS THE FOLLOWING NEW AND INNOVATIVE FEATURES: LOW DISPERSION “HD” SCHOTT GLASS, 100 MOA OF ADJUSTMENT, THE INCREDIBLE MID TUBE PARALLAX ADJUSTMENT OFFERS A CRYSTAL CLEAR IMAGE AS CLOSE AS 21 FEET @ 40x POWER, 7x ZOOM MAGNIFICATION RANGE, WIDE ANGLE FOV, GREAT EYE RELIEF, RAZOR SHARP CLARITY, TRUE NATURAL COLORS, 100 CLICK PER TURN EXPOSED TURRET WITH SECONDARY POINT OF IMPACT INDICATOR AND FAST FOCUS OCULAR. AS AN OPTION, WE OFFER INTERCHANGEABLE BDC TURRET RINGS FOR .338 LaPUA AND .50 BMG. PREMIUM TACTICAL RINGS AND SUNSHADE INCLUDED! TECHNICAL FEATURES MAGNIFICATION 5.8-40x OBJECTIVE SIZE 56mm FIELD OF VIEW (100 YDS.) 40-3.8 ft EXIT PUPIL 9.6- 1.4 mm EYE RELIEF 3.85 INCH DIOPTRICAL ADJUSTMENT -3 TO +3 DPT. CLOSE FOCUS ADJUSTMENT @40x 21 ft. RETICLE-TOTAL ADJUSTMENT RANGE 100 MOA CLICK VALUE 1/4 MOA AT 100 YDS. TUBE DIAMETER 40 mm HD LOW DISPERSION GLASS
Rifle Scope Product Features
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About the Valdada Scope Maker
Valdada is a premium company for firearm scopes, optics, mounts, and other components used for guns like rifles and long guns. They style and manufacture their scopes, mounts, and related products choosing building materials which are resilient and long lasting. This includes the Valdada Crusader 5.8 40 x 56 FFP Scope New Mil/Mil by Valdada. For more shooting goods, visit their website.
Rifle scopes permit you to specifically align a rifle at various targets by aligning your eye with the target over a distance. They accomplish this through magnifying the target by employing a set of lenses inside the scope. The scope’s alignment can be dialed in for consideration of many ecological elements like wind speed and elevation increases or decreases to make up for bullet drop.
The scope’s function is to understand precisely where the bullet will land based on the sight picture you are viewing through the optic as you align the scope’s crosshair or reticle with the target. Many modern rifle scopes and optics have around 11 parts which are located internally and outside of the optic. These optic pieces include the rifle scope’s body, lenses, adjustment turrets, objective focus rings, and other parts. Learn about the eleven parts of rifle scopes.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding on the finest type of rifle optic is based on what type of shooting you plan to do.
About First Focal Plane Glass
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. These styles of scopes are useful for:
- Quick acquisition, long distance types of shooting
- Shooting situations where calculations are minor
- Experienced shooters who recognize their target “hold over” as well as “lead” ratios for their weapon
- Shooters who do not mind the reticle is bigger and takes up more visual eyesight space than a SFP reticle
Info on Second Focal Plane Glass
Second focal plane optics (SFP) include the reticle to the rear of the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick reticle measurement.
- Long distance types of shooting where shooters have more time to make ballistic estimations
- Shooting where most shots occur within much shorter ranges and proximities
- Shooters who select a clearer optic sight picture with less room used up by the bigger FFP reticle
Rifle Optic Zoom
The quantity of zoom a scope supplies is figured out by the diameter, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Fixed Single Power Lens Rifle Glass
A single power rifle optic and scope will have a magnification number designator like 4×32. This means the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this kind of scope can not fluctuate since it is a set power scope.
Variable Power Lens Rifle Glass
Variable power rifle scopes can be adjusted between magnification levels. It will note the zoom degree in a configuration like 2-10×32. These numbers mean the zoom of the scope can be adjusted between 2x and 10x power. This always includes the powers in-between 2 and 10. The power adjustment is achieved by employing the power ring part of the scope near the back of the scope by the eye bell piece.
Rifle Glass Power Level and Range Correlation
Here are some recommended scope power levels and the distances where they may be successfully used. High power glass will not be as effective as lower magnification level glass given that too much zoom can be a bad thing. The same concept relates to extended ranges where the shooter needs to have increased power to see where to properly aim the rifle.
Lens Finishing for Scopes
All modern rifle optic lenses are coated. There are various types and qualities of glass finishings. Lens finish can be an important element of a rifle’s setup when looking at high-end rifle optics and targeting units. The lenses are among the most essential pieces of the optic since they are what your eye sees through while sighting a rifle in on the point of impact. The coating on the lenses protects the lens surface area and even improves anti glare from refracted daylight and color profiles.
HD Versus ED Optic Lens Coatings
Some rifle glass manufacturers also use “HD” or high-def lense finishings that apply various processes, aspects, polarizations, and chemicals to draw out different colors and viewable target definition through the lens. This high-def coating is often used with higher density glass which decreases light’s chance to refract through the lens glass. Some scope manufacturers use “HD” to describe “ED” signifying extra-low dispersion glass. ED handles how colors are represented on the chroma spectrum and the chromatic difference or aberration which is also called color distortion or fringing. Chromatic aberration may be obvious around items with well defined outlines as light hits the item from certain angles.
Single Scope Lens Finish Versus Multi-Coating
Various optic lenses can also have different finishes applied to them. All lenses typically have at least some kind of treatment or coating applied to them prior to being used in a rifle scope or optic assembly. This is due to the fact that the lens isn’t just a raw piece of glass. It becomes part of the finely tuned optic. It requires a coating to be applied to it so that it will be optimally usable in lots of types of environments, degrees of light (full light VS shade), and other shooting conditions.
This lens treatment can protect 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 coated lens depends on the scope maker and how much you paid for it.
Some scope manufacturers similarly 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 materials used in developing the rifle scope.
Details on Hydrophobic Coating
Water on a lens doesn’t assist with keeping a clear sight picture through a scope at all. Many top of the line and high-end scope makers will coat their lenses with a hydrophilic or hydrophobic anti-water coating.
Rifle Glass Installing Choices
Installing solutions for scopes come in a couple of options. There are the standard scope rings which are separately installed to the scope and one-piece scope mounts which cradle the scope. These various types of mounts also typically come in quick release versions which use throw levers which permit rifle shooters to quickly mount and dismount the scopes.
Hex Key Rifle Optic Ring Mounting Solutions
Standard, clamp design mounting scope rings use hex head screws to mount to the flattop style Picatinny scope installation rails on rifles. These types of scope mounts use two different rings to support the optic, and are often made from 7075 T6 billet aluminum which is created for long range accuracy shooting. This type of scope install is fine for rifles which require a long lasting, sound mount 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 style mount, a number of scopes can also be swapped out in the field. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach firmly 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 preserving the original sighting settings. These types of mounts are useful and practical for rifles which are transferred between vehicles a lot, to remove the scope glass from the rifle for protection, or for sight systems which are chosen for use in between a number of rifles. An example of this mount style is the 30mm mount designed by Vortex Optics. It typically costs around $250 USD
Scope Tube Sealing and Gas Purging
Moisture inside your rifle scope can destroy a day of shooting and your costly 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.
Details on Glass Tube Gas Purging
Another element of avoiding the buildup of wetness inside of the rifle scope’s tube is filling the tube with a gas like nitrogen. Because this space is currently occupied by the gas, the glass is less influenced by temp alterations and pressure differences from the outside environment which could potentially enable water vapor to leak in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a good rifle scope to look for.