Last update on February 8, 2023 // Source: Amazon API
Rifle Scope Product Details
Swift SR653S Reliant Riflescope, Silver
Swift 4x40mm Wide Angle Rifle Scope is a general-purpose scope at 4x with the added features of wide full field, 35 feet at 100 yards-plus an R.L.E. of 150 giving brighter images under poor light conditions.
Rifle Scope Product Features
Item is Fog proof
Self Centering Quadraplex Reticle
Magnification – 4x 40mm
SWIFT SR653 Riflescope in Matte(M) or Silver(S) Finish
SWIFT SR653 Specifications
Objective Diameter: 40mm
FOV @ 1000 yds/m: 35ft/11.7m
Eye Relief: 3.0in/76.2mm
Prisms: BaK7 Schott
SWIFT SR653 Reliant Riflescope, 4×40
Available in Matte Black(M) or Silver(S) Finish
A general-purpose, fixed power scope with wide field of view and bright optics.
USA Made, BaK7 Schott Glass
Full Saddle Construction
1 inch Aircraft Aluminum
Locking Ring Eyepiece
Parallax Free at 100 Yards
1/4 inch Click MOA – Finger Turn, Windage and Elevation
Self-centering Quadraplex Reticle
Complete with Objective Dust Covers
Waterproof, Fogproof and Shockproof
SwiftReliant Five Year Warranty
About the Swift Sport Optics Company
Swift Sport Optics is a premium producer for long gun scopes, optics, mounting solutions, and other add-ons used for guns like rifles and long guns. They style and manufacture their scopes, mounts, and related products by choosing materials which are long lasting and durable. This includes the Swift SR653S Reliant Riflescope, Silver by Swift Sport Optics. For more shooting products, visit their site.
Rifle Optic Details
Rifle scopes permit you to precisely align a rifle at various targets by lining up your eye with the target at range. They do this through zoom by making use of a series of lenses inside the scope. The scope’s alignment can be dialed in to account for numerous natural aspects like wind speed and elevation to account for bullet drop.
The scope’s function is to help shooters understand exactly where the bullet will land based upon the sight picture you are viewing through the scope as you line up the scope’s crosshair or reticle with the target. Most modern rifle scopes have around eleven parts which are found inside and on the exterior of the scope body. These optic pieces include the rifle scope’s body, lenses, elevation dials or turrets, focus rings, and other parts. Learn about the eleven parts of rifle glass.
Rifle Glass Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The kind of focal plane a scope has decides where the reticle or crosshair lies in regard to the optic’s magnification. It simply means the reticle is behind or before the magnifying lens of the optic. Selecting the most desired sort of rifle glass is based on what kind of hunting or shooting you intend on undertaking.
About First Focal Plane Optics
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. These kinds of scopes are beneficial for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where estimations are marginal
- Experienced shooters who recognize their target “hold over” as well as “lead” equations for their firearms
- Shooters who do not mind the reticle is bigger and takes up more visual eyesight area than a SFP reticle
Second Focal Plane Optic Details
Second focal plane scopes (SFP) include the reticle to the rear of the magnifying lens. This triggers the reticle to remain at the very same scale in connection with the amount of zoom being used. The final result is that the reticle dimensions adapt based upon the zoom employed to shoot over longer ranges given that the reticle measurements represent distinct increments which fluctuate with the magnification. In the FFP example with the SFP optic, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement. These particular styles of optics work for:
- Long distance types of shooting where shooters have increased time to make ballistic calculations
- Shooting where most shots occur within much shorter ranges and distances
- Shooters who would like a clearer optic picture without space used up by the larger sized FFP reticle
Rifle Glass Zoom
The amount of zoom a scope provides is figured out by the diameter, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Power Lens Glass Info
A single power rifle optic and scope comes with a zoom number designator like 4×32. This indicates the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this kind of scope can not fluctuate given that it is a fixed power scope.
Variable Power Lens Rifle Glass Info
Variable power rifle scopes use variable power levels. The power change is performed by using the power ring part of the scope near the rear of the scope by the eye bell.
Optic Power and Ranges
Here are some advised scope power settings and the ranges where they may be successfully used. Remember that high power optics will not be as effective as lower magnification level scopes because excessive magnification can be a negative thing in certain situations. The very same idea applies to extended ranges where the shooter needs adequate power to see exactly where to properly aim the rifle at the target.
Details on Lens Finishes
All present day rifle scope and optic lenses are coated. Lens finish can be a crucial element of a rifle system when looking at high end rifle optics and scope setups.
HD Versus ED Lenses
Some scope manufacturers will also use “HD” or high-definition lense coverings which employ different procedures, polarizations, chemicals, and elements to extract numerous color ranges and viewable definition through the lens. This high-definition covering is often used with higher density lens glass which drops light’s potential to refract by means of the lens glass. Some scope vendors use “HD” to refer to “ED” indicating extra-low dispersion glass. ED deals with how certain colors are represented on the chroma spectrum and the chromatic difference or aberration which is also called color distortion or fringing. Chromatic aberration is often visible around things with hard edges and outlines as light hits the object from specific angles.
Single Glass Lens Finishing Versus Multi-Coating
Different optic lenses can also have different coverings applied to them. All lenses typically have at least some type of treatment or covering applied to them before they are used in a rifle scope or optic.
This lens treatment can offer protection to the lens from scratches while decreasing 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 producer and how much you paid for it.
Some scope producers also make it a point to define if their optic lenses are layered or “multi” coated. Being “much better” depends on the manufacturer’s lens treatment technology and the quality of materials used in building the rifle scope.
What to Know About Hydrophobic Covering
Water on a lens doesn’t assist with preserving a clear sight picture through a scope at all. Numerous top of the line and military grade optic companies will coat their lenses with a hydrophobic or hydrophilic covering.
Optic Installing Alternatives
Mounting approaches for scopes can be found in a couple of options. There are the standard scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These different kinds of mounts also generally can be found in quick release variations which use manual levers which permit rifle shooters to quickly mount and remove the glass.
Optic Mounting Solutions with Hex Key Rings
Standard, clamp design 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 is developed for long range precision shooting. This type of scope install is great for rifles which need a resilient, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Optic Rings
These types of quick-release rifle scope mounts can be used to rapidly detach a scope and attach it to a different rifle. Numerous scopes can even be swapped out if they all use a similar style mount. These types of mounts are convenient for rifle platforms which are carried a lot, to swap out the optic from the rifle for protection, or for optics which are used between numerous rifles.
Sealing and Gas Purging for Rifle Scope Tubes
Wetness inside your rifle optic can mess up a day of shooting and your costly optic by triggering fogging and developing residue inside of the scope tube. A lot of scopes avoid wetness from entering the scope tube with a system of sealing O-rings which are water resistant.
Info on Rifle Scope Tube Gas Purging
Another component of preventing the accumulation of wetness inside of 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 scope is less impacted by temp shifts and pressure differences from the outside environment which could potentially enable water vapor to permeate in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to seek out.