Last update on August 9, 2022 // Source: Amazon API
Rifle Scope Product Details
Swift SRP3908M Premier 30mm Riflescope, Matte
Swift Premier 30MM Collection is designed to meet the high-performance requirements of the discerning hunter, with superior optics and capabilities at a competitive price. The enhanced Premier Line includes special coatings for crisper, brighter images and improved eye relief for safety and ease of use. Featuring BaK7 Schott glass, fully multi-coated optics offering up to 96% greater light transmission, quick-focus eye piece, 30mm aircraft aluminum construction with T-6 process and full saddle construction for added durability, waterproof, fog proof & shockproof design and low-profile 1/4″ MOA click stop target turret windage and elevation adjustments for quick target acquisition.
Rifle Scope Product Features
2.5-10×50 NON-Illuminated Riflescope
BaK7 Schott Glass
Waterproof, Fog proof and Shockproof
Self Centering Reticle
30mm Aircraft Aluminum Tuber
SWIFT SRP3908 Premier 30mm Riflescope
Objective Diameter: 50mm
FOV @ 1000 yds/m: 39.5ft/13.2m, 10.7ft/3.6m
Eye Relief: 4.2/3.0in, 106.7/76.2mm
Fully Multi-coated Lenses
Prisms: BaK7 Schott
Complete with Quick-thread Sunshade and Objective Dust Covers
Waterproof, Shockproof and Fogproof
Swift Lifetime Warranty
SWIFT SRP3908M Premier 30mm Riflescope
Ideal magnification and light gathering. Great for woods and extended distance hunting.
Designed to meet the high-performance requirements of the discerning hunter, with superior optics and capabilities at a competitive price. The enhanced Premier Line includes special coatings for crisper, brighter images and improved eye relief for safety and ease of use. Featuring BaK7 Schott glass, fully multi-coated optics offering up to 96% greater light transmission, quick-focus eye piece, 30mm aircraft aluminum construction with T-6 process and full saddle construction for added durability, waterproof, fogproof & shockproof design, and low-profile 1/4 inch MOA click stop target turret windage and elevation adjustments for quick target acquisition.
About the Swift Sport Optics Brand
Swift Sport Optics is a premium maker for weapon scopes, optics, mounting solutions, and other accessories used for guns like rifles and long guns. They design and manufacture their products by choosing building materials which are durable and long lasting. This includes the Swift SRP3908M Premier 30mm Riflescope, Matte by Swift Sport Optics. For additional shooting items, visit their website.
What You Need to Know About Scopes
Rifle scopes allow you to precisely aim a rifle at different targets by lining up your eye with the target at range. They accomplish this through zoom by employing a set of lenses within the scope. The scope’s positioning can be adapted for consideration of various environmental considerations like wind speed and elevation increases or decreases to account for bullet drop.
The scope’s function is to help the shooter understand precisely where the bullet will land based upon the sight picture you are seeing via the optic as you line up the scope’s crosshair or reticle with the target. The majority of contemporary rifle optics have about 11 parts which are located inside and on the exterior of the scope. These scope parts consist of the rifle scope’s body, lenses, windage dials or turrets, focus rings, and other parts. See all eleven parts of a rifle optical system.
About Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The form of focal plane an optic has establishes where the reticle or crosshair lies in relation to the scopes magnification. It literally suggests the reticle is located behind or in front of the magnification lens of the scope. Deciding on the best type of rifle optic depends on what form of hunting or shooting you plan 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, far away types of shooting
- Shooting circumstances where computations are low
- Experienced shooters who understand their aim point “hold over” and “lead” correlations for their rifles
- Shooters who don’t mind the reticle is bigger and occupies more visual sight space than a SFP reticle
Second Focal Plane Glass Info
Second focal plane optics (SFP) include the reticle behind the magnification 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.
- Far away kinds of shooting where shooters have more time to make ballistic computations
- Shooting where most shots occur within shorter spaces and ranges
- Shooters who desire a clearer optic sight picture with less space taken up by the larger size FFP reticle
Rifle Optic Magnification
The quantity of zoom a scope provides is figured out by the size, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Single Power Lens Rifle Optic Details
A single power rifle optic uses a zoom number designator like 4×32. This implies the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of scope can not change since it is a fixed power scope.
Adjustable Power Lens Rifle Glass Details
Variable power rifle scopes use variable power levels. The power adjustment is accomplished using the power ring part of the scope near the rear of the scope by the eye bell.
The Power Level and Range Correlation of Rifle Glass
Here are some recommended scope power levels and the ranges where they could be successfully used. High power scopes will not be as efficient as lower magnification glass given that too much magnification can be a negative aspect depending on your shooting distance. The same idea goes for extended distances where the shooter needs to have adequate power to see precisely where to best aim the rifle at the target.
Details on Lens Coating
All modern rifle optic and scope lenses are coated. There are various types and qualities of glass lens coverings. When looking at high end rifle optical systems, Lens coating can be a crucial component of defining the rifle’s capability. The glass lenses are one of the most critical pieces of the optic as they are what your eye sees through while sighting a rifle in on the point of impact. The finishing on the lenses protects the lens surface and assists with anti glare from excess natural light and color recognition.
HD Versus ED Lens Coatings
Some glass producers also use “HD” or high-definition lense finishings which employ various procedures, chemicals, polarizations, and aspects to extract separate color ranges and viewable target visibility through the lens. This high-definition covering is frequently used with greater density lens glass which brings down light’s opportunity to refract by means of the lens glass. Some scope brands use “HD” to describe “ED” indicating extra-low dispersion glass. ED handles how colors are presented on the chroma spectrum and the chromatic aberration or deviance which is similarly called color distortion or fringing. Chromatic aberration is often visible around items with hard edges and outlines as light hits the item from various angles.
Single Covering Versus Multi-Coating
Different optic lenses can likewise have different coverings used to them. All lenses usually have at least some type of treatment or finishing applied to them before they are used in a rifle scope or optic.
This lens treatment can safeguard the lens from scratches while minimizing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope makers similarly make it a point to specify if their optic lenses are coated or “multi” coated. Being “better” depends on the maker’s lens treatment technology and the quality of materials used in constructing the rifle scope.
Hydrophobic Lens Finishing
Water on a lens does not help with keeping a clear sight picture through a scope at all. Many top of the line and high-end scope companies will coat their lenses with a hydrophilic or hydrophobic coating.
Options for Mounting Rifle Optics on Long Guns
Mounting approaches for scopes can be found in a couple of choices. There are the basic scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These different kinds of mounts also usually come in quick release variations which use toss levers which permit rifle shooters to rapidly install and remove the optics.
Optic Mounts with Hex Key Rings
Normal, 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 different rings to support the optic, and are often made from 7075 T6 billet aluminum which is developed for long distance accuracy shooting. This type of scope mount is wonderful for rifles which need a resilient, rock solid mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Rifle Optic Mounts with Quick-Release Cantilever 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 switched out if they all use a compatible design mount. These types of mounts come in handy for long guns which are carried a lot, to swap out the optic from the rifle for protection, or for optics which are used between numerous rifles.
Details on Rifle Optic Tube Sealing and Gas Purging
Wetness inside your rifle optic can wreck a day of shooting and your pricey optic by resulting in fogging and making residue inside of the scope tube. Many scopes protect against humidity from entering the scope tube with a series of sealing O-rings which are water resistant. Usually, these water-resistant optics can be immersed underneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be more than enough moisture content prevention for standard use rifles, unless you anticipate taking your rifle on a boat and are worried about the scope still performing if it is submerged in water and you can still recover the firearm.
Gas Purged Rifle Scope Tubes
Another part of preventing the accumulation of moisture within the rifle optic tube is filling the tube with a gas like nitrogen. Given that this area is currently taken up by the gas, the scope is less altered by temperature level shifts and pressure distinctions from the external 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 decent rifle scope to seek out.