Description
Rifle Scope Product Details
Swift SRP688M Premier Riflescope, Matte
Swift 6-18x44mm Premier Mil Dot Riflescope SPRMil688M does Mil-Dot Range Finding at the correct magnification (10X) and its marked clearly on the power ring with an “M”. The adjustable objective of Swift Mil-Dot Scope SPR Mil 688M dials out parallax error from infinity down to 10 yards. Swift Premier Mil-Dot 6-18×44 Riflescope has Dust covered target knobs with definite “click” 1/4 MOA adjustment. This Swift Rifle Scope features crystal clear and bright sight picture. Swift Premier Mil Dot Waterproof Riflescope SPR Mil 688 M is an ideal scope for big game hunting at long distances. Screw-on sunshade included w/Lens covers.
Rifle Scope Product Features
Waterproof and Fog proof
Speed Focus
Crystal clear optics with superior light gathering ability
1/4″ click stop adjustment
Parallax Free at 100 yards
Swift has added a coil spring to the SRP line of products. The coil springs give the scope more protection against heavy recoil rifles. Our coil spring system was made popular in the Sur-Lok series, and was simplified to work with all SRP models. Now you not only get amazing clarity, but also the recoil protection you need.
SWIFT SRP688M Premier Riflescope, Matte
6-18×44 CS, Mil-Dot
Ideal scope for big game hunting at long distances. Features our new improved Coil Spring System.
Objective Diameter: 44mm
FOV @ 1000yds/m: 19.5ft/6.5m, 7ft/2.3m
Eye Relief: 2.8in/71.1mm
Length: 15.4in/39.1cm
Weight: 22.6oz/641g
Lens Coatings: FMC
Prisms: BaK7 Schott
MOA: 1/4in
Reticle: Mil-Dot
Waterproof/Fogproof: Yes
About the Swift Sport Optics Scope Maker
Swift Sport Optics is a premium maker for firearm scopes, optics, mounting solutions, and other add-ons used for firearms like rifles and long guns. They create and make their scopes, mounts, and related products working with materials which are long lasting and durable. This includes the Swift SRP688M Premier Riflescope, Matte by Swift Sport Optics. For additional shooting products, visit their site.
Info About Rifle Optics
Rifle scopes permit you to precisely align a rifle at various targets by lining up your eye with the target at range. They accomplish this through magnifying the target by making use of a set of lenses within the scope. The scope’s positioning can be dialed in to account for many ecological factors like wind and elevation to make up for bullet drop.
The scope’s purpose is to help shooters understand exactly where the bullet will hit based upon the sight picture you are viewing through the optic as you line up the scope’s crosshair or reticle with the intended point of impact. The majority of modern-day rifle optics have about eleven parts which are located internally and outside of the scope. These optic pieces consist of the rifle scope’s body, lenses, modification dials, objective focus rings, and other elements. Learn about the eleven parts of rifle optics.
The Types of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The style of focal plane a scope has determines where the reticle or crosshair lies in connection with the scopes magnification. It simply means the reticle is located behind or before the magnification lens of the scope. Picking the most beneficial type of rifle glass depends upon what variety of shooting or hunting you anticipate undertaking.
Info About First Focal Plane Glass
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These types of scopes are helpful for:
- Quick acquisition, long distance types of shooting
- Shooting situations where calculations are low
- Experienced shooters who understand their aim point “hold over” as well as “lead” relationships for their rifles
- Shooters who do not mind the reticle is enlarged and uses up more visual sight space than a SFP reticle
About Second Focal Plane Glass
Second focal plane optics (SFP) include the reticle to the rear of the magnifying lens. This triggers the reticle to stay at the same overall size relative to the amount of zoom being used. The result is that the reticle measurements change based on the magnification chosen to shoot over longer distances given that the markings represent distinct increments which fluctuate with the magnification. In the FFP example with the SFP glass, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement. These particular varieties of glass are handy for:
- Long distance forms of shooting where shooters have increased time to make ballistic estimations
- Shooting where most shots take place within much shorter proximities and ranges
- Shooters who want a clearer optic sight picture with less space taken up by the bigger FFP reticle
Magnification for Rifle Glass
The level of scope zoom you need depends on the style of shooting you would like to do. Practically every style of rifle optic delivers some amount of zoom. The quantity of zoom a scope gives is established by the diameter, thickness, and curves of the lenses inside of the rifle optic. The magnification level of the scope is the “power” of the opic. This indicates what the shooter is observing through the scope is magnified times the power element of what can usually be seen by human eyes.
Info About Single Power Lens Scopes
A single power rifle optic or scope will have a magnification 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 kind of scope can not fluctuate since it is set from the factory.
Adjustable Power Lens Rifle Scope Facts
Variable power rifle scopes use variable power levels. The power change is accomplished by using the power ring part of the scope near the rear of the scope by the eye bell.
The Power and Range Correlation of Scopes
Here are some suggested scope powers and the ranges where they may be effectively used. High power rifle scope glass will not be as efficient as lower magnification optics since too much zoom can be a bad thing. The same idea goes for longer ranges where the shooter needs to have enough power to see precisely where to properly aim the rifle.
Rifle Glass Lens Coating
All modern-day rifle scope and optic lenses are covered in special coatings. There are different types and qualities of glass lens finishes. Lens coating is an essential element of a rifle when considering luxury rifle optics and scope systems. The lenses are among the most significant parts of the glass due to the fact that they are what your eye looks through while sighting a rifle in on the point of impact. The finish on the lenses safeguards the lens exterior and helps with anti glare capabilities from refracted sunlight and color presence.
HD Versus ED Lenses
Some scope brands also use “HD” or high-definition lens finishings which use various processes, aspects, polarizations, and chemicals to draw out various colors and viewable definition through the lens. Some scope manufacturers use “HD” to refer to “ED” implying extra-low dispersion glass.
Scope Lens Single Coating Versus Multi-Coating
Various optic lenses can also have various finishes used to them. All lenses normally have at least some type of treatment or finish applied to them prior to being used in a rifle scope or optic.
This lens treatment can protect 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 manufacturers similarly make it a point to define if their optic lenses are layered or “multi” coated. Being “much better” depends on the maker’s lens treatment technology and the quality of materials used in constructing the rifle scope.
Anti-water Covering for Optics
Water on a lens does not assist with maintaining 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 hydrophobic or hydrophilic finishing.
Options for Installing Glass on Long Guns
Mounting approaches for scopes are available in a few choices. There are the basic scope rings which are individually installed to the optic and one-piece scope mounts which cradle the scope. These different types of mounts also generally come in quick release variations which use toss levers which permit rifle operators to quickly mount and dismount the glass.
Hex Key Glass Ring Mounts
Standard, clamp design mounting scope rings use hex head screws to mount to the flattop design Picatinny scope mount rails on rifles. These types of scope mounts use two separate rings to support the optic, and are often made from 7075 T6 billet aluminum which is developed for long range accuracy shooting. This type of scope install is excellent for rifles which require a durable, sound mount which will not move no matter how much the scope is moved or abused.
Rifle Optic Mounting Solutions with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to rapidly remove a scope and attach it to a different rifle. Several scopes can also be swapped out if they all use a similar design mount. These types of mounts are convenient for rifle platforms which are transported a lot, to swap out the optic from the rifle for protection, or for optics which are used in between several rifles.
Sealing and Gas Purging for Glass Tubes
Wetness inside your rifle optic can spoil a day on the range and your pricey optic by triggering fogging and making residue inside of the scope’s tube. The majority of scopes prevent humidity from entering the scope tube with a system of sealing O-rings which are waterproof. Generally, these scopes can be immersed beneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be sufficient wetness avoidance for basic use rifles, unless you intend on taking your rifle on your motorboat and are concerned about the scope still functioning if it goes overboard and you can still salvage the gun.
About Scope Tube Gas Purging
Another element of avoiding the buildup of moisture inside of the rifle scope tube is filling the tube with a gas like nitrogen. Considering that this space is already occupied by the gas, the glass is less influenced by condition shifts and pressure differences from the outside environment which could potentially permit water vapor to permeate in around the seals to fill the void which would otherwise be there. These are good qualities of a good rifle scope to seek out.
