Last update on February 5, 2023 // Source: Amazon API
Rifle Scope Product Details
VANGUARD Endeavor RS IV 4-16x50mm Riflescope, Duplex Reticle, Illuminated
Endeavor RS IV offers acclaimed Vanguard quality in a premium European tube design to meet the performance requirements of the aspiring and professional user. Exceptional image quality is delivered through multilayer anti-reflective coatings for increased light transmission and optical designs using premium HOYA ED glass. Large fields of view, a rapid focus eyepiece, and enhanced contrast combine to deliver a positive experience afield. The single piece 30MM tube is constructed from high grade T6061 aluminum, and with its hard anti-scratch anodized matte surface deliver a robust and ergonomic platform. The Endeavor RS IV is sealed against dust and moisture, nitrogen purged, and recoil resistant to provide a lifetime of dependability and success. Precise windage and elevation adjustments offer reset capability and accuracy with a locking side parallax system on certain models. The Endeavor RS IV offers illuminated Duplex, German #4 and Dispatch ballistic reticles for easy application in low light. Engineered to handle rugged terrain in the most challenging conditions and backed by our Industry Leading Warranty. Vanguard manufactures the Endeavor RS IV in its own factory to ensure the highest quality from start to finish. A great all around riflescope with enough magnification to extend your rifle’s reach. Perfect in the mountains as well as on the deer stand. The large 50MM objective and illuminated reticle delivers exceptional low light performance.
Rifle Scope Product Features
One Piece Solid Aircraft Grade Aluminum. Four Times Zoom Factor
Premium HOYA ED Glass Provides True Color and Edge to Edge Clarity. Advanced MultiGuard Coatings for Higher Light Transmittance
Precise Windage & Elevation Adjustment with Zero Reset Feature. Rapid Focus Eyepiece
Hard and Durable Anodized Finish. Illuminated Reticle. Premium Lifetime Warranty
Magnification: 4~16. Objective Diameter: 50mm. Tube Size: 30mm. Weight: 26.1 ounces. Scope length: 14.5″. Exit Pupil: 12.5~3.13mm. View angle: 5.~1.33 degrees. Field of View: 26.1~6.9 ft/100 yards. Eye Relief: 4.09~3.54″.
About the Vanguard Company
Vanguard is a premium manufacturer for rifle scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They create and supply their mounts and related products choosing materials which are durable and long lasting. This includes the VANGUARD Endeavor RS IV 4-16x50mm Riflescope, Duplex Reticle, Illuminated by Vanguard. For more shooting products, visit their website.
All About Optics
Rifle scopes allow you to specifically aim a rifle at different targets by aligning your eye with the target over a distance. They do this through zoom by using a set of lenses within the scope. The scope’s alignment can be adjusted for consideration of numerous natural factors like wind and elevation increases or decreases to make up for bullet drop.
The scope’s function is to help the shooter understand exactly where the bullet will land based upon the sight picture you are seeing through the scope as you align the scope’s crosshair or reticle with the target. A lot of modern-day rifle optics have around 11 parts which are located inside and outside of the scope. These scope parts include the rifle scope’s body, lenses, modification dials, focus rings, and other components. Learn about the eleven parts of rifle optics.
Rifle Scope Styles
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The style of focal plane an optic has determines where the reticle or crosshair lies relative to the scopes magnification. It actually indicates the reticle is located behind or in front of the magnifying lens of the optic. Considering the best type of rifle optic depends upon what style of shooting or hunting you anticipate undertaking.
Info on First Focal Plane Glass
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. This causes the reticle to increase in size based upon the amount 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. For instance, one tick on a mil-dot reticle at 100 yards without having “zoom” is still the exact same tick at one hundred yards using 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away kinds of shooting
- Shooting scenarios where computations are marginal
- Experienced shooters who understand their aim point “hold over” and “lead” relationships for their long guns
- Shooters who don’t mind the reticle is bigger and occupies more visual eyesight space than a SFP reticle
Info About Second Focal Plane Scopes
Second focal plane optics (SFP) come with the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick reticle measurement.
- Long distance forms of shooting where shooters have more time to make ballistic calculations
- Shooting where most of the shots occur within much shorter ranges and spaces
- Shooters who select a clearer optic picture with less area taken up by the larger size FFP reticle
Magnification for Rifle Optics
The level of scope zoom you need on your glass is based on the kind of shooting you intend to do. Practically every type of rifle optic provides some level of zoom. The quantity of zoom a scope provides is established by the diameter, thickness, and curves of the lenses inside of the rifle optic. The magnification of the optic is the “power” of the opic. This indicates what the shooter is observing through the scope is amplified times the power aspect of what can generally be seen by human eyes.
Single Power Lens Scopes
A single power rifle optic or scope comes with a zoom number designator like 4×32. This indicates the magnification power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of optic can not change because it is fixed.
Adjustable Power Lens Rifle Scopes
Variable power rifle scopes have adjustable power. These types of scopes will note the magnification amount in a configuration like 2-10×32. These numbers imply the magnification of the scope can be set in between 2x and 10x power. This additionally incorporates the power levels in-between 2 and 10. The power manipulation is achieved by employing the power ring component of the scope near the back of the scope by the eye bell.
Rifle Optic Power and Ranges
Here are some suggested scope power settings and the ranges where they could be efficiently used. Bear in mind that high power optics and scopes will not be as effective as lower magnification level scopes because excessive magnification can be a bad thing. The exact same idea goes for longer ranges where the shooter needs enough power to see exactly where to properly aim the rifle.
Lens Covering for Rifle Glass
All contemporary rifle scope and optic lenses are covered in special coatings. There are various types and qualities of glass finishings. Lens covering can be an essential aspect of a rifle when contemplating high-end rifle optics and scope units. The lenses are one of the most critical pieces of the glass given that they are what your eye sees through while sighting a rifle in on the target. The finish on the lenses protects the lens surface and even improves anti glare capabilities from refracted natural light and color visibility.
About Lens Coatings – HD Versus ED
Some scope manufacturers additionally use “HD” or high-def lense coverings which employ various procedures, components, polarizations, and chemicals to extract different color ranges and viewable definition through lenses. This high-definition finishing is often used with greater density glass which reduces light’s ability to refract through the lens glass. Some scope manufacturers use “HD” to describe “ED” implying extra-low dispersion glass. ED handles how certain colors are represented on the chroma spectrum and the chromatic aberration or deviance which is also called color distortion or fringing. Chromatic aberration may be visible around objects with well defined outlines as light hits the object from certain angles.
About Single Finishing Versus Multi-Coating
Different optic lenses can likewise have various finishes used to them. All lenses typically have at least some type of treatment or finishing used to them prior to being used in a rifle scope or optic.
Single covered lenses have a treatment applied to them which is usually a protective and improving multi-purpose treatment. This lens treatment can shield the lens from scratches while decreasing glare and other less helpful things experienced in the shooting environment while sighting in with the optic. The quality of a single coated lens depends upon the scope developer and how much money you paid for it. Both the make and cost are indicators of the lens quality.
Some scope producers likewise make it a point to define if their optic lenses are layered or “multi” coated. This suggests the lens has multiple treatments applied to the surfaces. If a lens gets multiple treatments, it can indicate that a company is taking numerous actions to combat various natural factors like an anti-glare finish, a scratch resistant anti-abrasion finishing, followed by a hydrophilic coating. This additionally doesn’t always mean the multi-coated lens will perform much better than a single layered lens. Being “better” is dependent on the maker’s lens treatment techniques and the quality of components used in constructing the rifle optic.
Scope Lens Hydrophobic Finishing
Water on a lens does not help with maintaining a clear sight picture through an optic whatsoever. Numerous top of the line or high-end scope producers will coat their lenses with a hydrophobic or hydrophilic finish. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It deals with the surface of the Steiner glass lens so the water particles can not bind to it or develop surface tension. The outcome is that the water beads move off of the scope to maintain a clear, water free sight picture.
Rifle Optic Installation Options
Installing solutions for scopes are available in a couple of options. There are the basic scope rings which are individually installed to the scope and one-piece mounts which cradle the scope. These different types of mounts also generally come in quick release versions which use manual levers which permit rifle operators to quickly mount and remove the scope.
Hex Key Rifle Glass Ring Mounts
Standard, clamp type mounting scope rings use hex head screws to position to the flattop design Picatinny scope mount rails on the tops of rifles. These kinds of scope mounts use a pair of detached rings to support the optic, and are normally made from 7075 T6 billet aluminum or similar materials which are made for long distance accuracy shooting. This kind of scope mount is good for rifles which require a durable, unfailing mount which will not move regardless of just how much the scope is moved about or jarring the rifle takes. These are the style of mounts you should have for a specialized scope system on a reach out and touch someone hunting or competition firearm that will pretty much never need to be changed or recalibrated. Blue 242 Loctite threadlocker can additionally be used on screws to keep the hex screws from backing out after they are mounted securely in position. An example of these rings are the 30mm type from the Vortex Optics company. The set normally costs around $200 USD
Scope Mounting Solutions with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to quickly detach a scope and connect it to a different rifle. Multiple scopes can also be swapped out if they all use a similar style mount. These types of mounts come in handy for rifles which are transported a lot, to remove the optic from the rifle for protection, or for scopes which are used between numerous rifles.
Sealing and Gas Purging for Rifle Scope Tubes
Wetness inside your rifle glass can ruin a day on the range and your costly optic by resulting in fogging and producing residue within the scope’s tube. The majority of optics protect against humidity from entering the scope tube with a series of sealing O-rings which are waterproof. Usually, these optics can be submerged underneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be more than enough moisture avoidance for conventional use rifles, unless you plan on taking your rifle aboard a watercraft and are worried about the scope still functioning if it is submerged in water and you can still retrieve the gun.
Gas Purged Rifle Scope Tubes
Another part of avoiding the buildup of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Given that this space is already occupied by the gas, the scope is less impacted by temperature level shifts and pressure differences from the outside environment which might potentially permit water vapor to leak in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to seek out.