Description
Rifle Scope Product Details
Swift SRP658M Premier Riflescope, Matte
Swift 2-7x40mm WA Premier-Series Waterproof Riflescope – Matte has a unique, hard-to-find combination of very wide field and high relative brightness, which makes this rifle scope easy to use under most conditions.
Rifle Scope Product Features
Hard anodized, fog proof case
Multicoated
Water-proof
Quadraplex reticle
SWIFT SRP658M
SWIFT SRP658M Premier Riflescope
2-7×40, Matte
Unique, hard-to-find combination of power and objective size make this super-bright scope easy to use under most conditions.
Objective Diameter: 40mm
FOV @ 1000 yds/m: 60ft/20m, 17ft/5.7m
Eye Relief: 2.9/2.7 in, 73.7/68.6 mm
Length: 11.6in/29.6cm
Weight: 12.5oz/354g
Fully Multi-coated lenses
Prisms: BaK7 Schott
MOA: 1/4in.
Reticle: Quadraplex
Complete with Quick-thread Sunshade and Objective Dust Covers
Waterproof, Fogproof and Shockproof
Swift Lifetime Warranty
About the Swift Sport Optics Manufacturer
Swift Sport Optics is a premium supplier for weapon scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They style and manufacture their scopes, mounts, and related products working with elements which are long lasting and resilient. This includes the Swift SRP658M Premier Riflescope, Matte by Swift Sport Optics. For more shooting goods, visit their site.
Rifle Scope Facts
Rifle scopes enable you to specifically align a rifle at different targets by lining up your eye with the target at range. They do this through magnification by employing a set of lenses within the scope. The scope’s alignment can be adjusted to account for different natural considerations like wind and elevation increases to account for bullet drop.
The scope’s purpose is to help shooters understand precisely where the bullet will hit based upon the sight picture you are viewing via the optic as you align the scope’s crosshair or reticle with the intended target. A lot of modern-day rifle scopes have about eleven parts which are found within and on the exterior of the scope. These scope parts consist of the rifle scope’s body, lenses, adjustment dials or turrets, objective focus rings, and other parts. Learn about the eleven parts of rifle optics.
Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding upon the best type of rifle glass is based on what type of shooting you plan to do.
First Focal Plane Optics
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These kinds of scopes are useful for:
- Quick acquisition, far away types of shooting
- Shooting circumstances where calculations are small
- Experienced shooters who have an idea for their aim point “hold over” as well as “lead” relationships for their rifles
- Shooters who do not mind the reticle is bigger and takes up more visual sight space than a SFP reticle
Second Focal Plane Glass
Second focal plane scopes (SFP) feature the reticle to the rear of the zoom lens. This induces the reticle to remain at the very same size in connection with the quantity of zoom being used. The result is that the reticle dimensions adapt based on the magnification applied to shoot over lengthier ranges considering the reticle markings present different increments which fluctuate with the magnification. In the FFP example with the SFP glass, the 5x “zoom” one hundred yard tick would be 1/5th of the non “zoom” tick measurement. These kinds of scopes work for:
- Long distance kinds of shooting where shooters have extra time to make ballistic computations
- Shooting where most of the shots occur within much shorter ranges and proximities
- Shooters who select a clearer optic picture without area used up by the enlarged FFP reticle
Details on Glass Magnification
The quantity of scope magnification you need on your optic depends on the kind of shooting you plan to do. Nearly every type of rifle optic supplies some amount of magnification. The level of zoom a scope supplies is determined by the size, density, and curvatures of the lens glass inside of the rifle optic. The magnification of the scope is the “power” of the glass. This indicates what the shooter is aiming at through the scope is amplified times the power factor of what can normally be seen by human eyes.
About Single Power Lens Rifle Optics
A single power rifle optic comes with a magnification number designator like 4×32. This implies the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of scope can not adjust since it is a fixed power optic.
Info on Variable Power Lens Rifle Optics
Variable power rifle scopes use variable power levels. The power modification is achieved using the power ring part of the scope near the rear of the scope by the eye bell.
Power Levels and Range Correlations
Here are some suggested scope power settings and the distances where they could be successfully used. Highly magnified optics will not be as efficient as lower powered glass given that too much magnification can be a negative aspect depending on your shooting distance. The same idea applies to longer ranges where the shooter needs enough power to see exactly where to properly aim the rifle.
Lens Finishing for Glass
All contemporary rifle scope and optic lenses are covered in special coatings. There are different types and qualities of lens coverings. Lens finishing can be a crucial element of a rifle when looking into high end rifle optics and targeting equipment. The glass lenses are one of the most important pieces of the glass since they are what your eye sees through while sighting a rifle in on the target. The covering on the lenses safeguards the lens surface area and also helps with anti glare capabilities from refracted sunrays and color profiles.
ED Versus HD Optics
Some scope manufacturers also use “HD” or high-definition lens finishings which use different methods, components, polarizations, and chemicals to draw out separate colors and viewable definition through the lens. Some scope manufacturers use “HD” to refer to “ED” implying extra-low dispersion glass.
Rifle Optic Lens Single Coating Versus Multi-Coating
Various optic lenses can also have different finishings used to them. All lenses usually have at least some type of treatment or finish used to them before being used in a rifle scope or optic.
Single layered lenses have a treatment applied to them which is generally a protective and improving multi-purpose treatment. This lens treatment can safeguard the lens from scratches while reducing 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 company and just how much you paid for it. The scope’s maker and cost are indicators of the lens quality.
Some scope manufacturers similarly make it a point to define if their optic lenses are layered or “multi” coated. Being “much better” depends on the producer’s lens treatment innovation and the quality of materials used in developing the rifle scope.
Anti-water Rifle Glass Lens Finish
Water on a lens doesn’t support maintaining a clear sight picture through a scope in any way. Numerous top of the line or high-end scope producers will coat their lenses with a hydrophilic or hydrophobic covering. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It deals with the surface area of the Steiner optic lens so the H2O particles can not bind to it or produce surface tension. The outcome is that the water beads roll off of the scope to maintain a clear, water free sight picture.
Glass Installation Choices
Mounting solutions for scopes are available in a couple of options. There are the basic scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These various types of mounts also normally are made in quick release versions which use manual levers which enable rifle shooters to rapidly mount and dismount the scope.
Hex Key Glass Ring Mounting Solutions
Standard, clamp-on design mounting optic rings use hex head screws to fix to the flattop style Picatinny scope mount rails on rifles. These varieties of scope mounts use double individual rings to support the scope, and are made from 7075 T6 billet aluminum which are made for long distance precision shooting. This form of scope mount is great for rifle systems which require a long lasting, unfailing mount which will not move no matter just how much the scope is moved about or abuse the rifle takes. These are the style of mounts you should get for a dedicated scope setup on a long distance hunting or interdiction rifle which will pretty much never need to be altered or recalibrated. Blue 242 Loctite threadlocker can additionally be used on the mount screws to stop the hex screws from wiggling out after they are mounted firmly in place. An example of these rings are the 30mm type from the Vortex Optics company. The set generally costs around $200 USD
Quick-Release Cantilever Rifle Scope Rings
These types of quick-release rifle scope mounts can be used to quickly remove a scope and connect it to a different rifle. Multiple scopes can even be swapped out if they all use a similar style mount. These types of mounts come in handy for long guns which are transported a lot, to swap out the optic from the rifle for protecting the scope, or for optics which are used in between multiple rifles or are situationally focused.
Sealing and Gas Purging for Rifle Glass Tubes
Moisture inside your rifle scope can ruin a day of shooting and your costly optic by causing fogging and producing residue inside of the scope tube. Many scopes avoid wetness from getting in the scope tube with a system of sealing O-rings which are waterproof.
Gas Purged Rifle Optic Tubes
Another part of preventing the accumulation of moisture inside of the rifle optic’s tube is filling the tube with a gas like nitrogen. Since this area is currently occupied by the gas, the scope is less influenced by temp shifts and pressure variations from the external environment which could possibly permit 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 seek out.
