Description
Last update on November 29, 2023 // Source: Amazon API
Rifle Scope Product Details
Styrka S3 Series 4-12×50 Plex Riflescope, Side Focus, Black, ST-91040-Aircraft Grade Aluminum 1″ Tube, Waterproof, Fully Multi-Coated, Bright, Crisp, Sharp Images-Hunting Rifle Scope – Styrka Strong
Style:4-12×50 Plex
The Styrka S3 riflescope series is Styrka’s opening price point and is a great option for those that are seeking excellent cost performance. Despite the lower price point, the series is feature rich with excellent optical quality that will not let you down in those critical situations. Fully multi-coated optics with Styrka’s proprietary SXL coating and blackened lens edges increase light transmission through the entire optical path for bright, high contrast images with amazing clarity and resolution. The 1″ aircraft grade aluminum one-piece tube provides structural integrity and durability while the ” MOA elevation and windage adjustments allow for precise adjustments when sighting in your rifle. All models are fully waterproof and nitrogen purged for use in any weather condition. The Styrka S3 4-12×50 is a great choice for those seeking more magnification than a 3-9, parallax adjustment and additional light gathering capability. All covered by the best warranty in the optics industry. We call it STYRKA Pride. It’s the warranty to beat all warranties. It’s simple, direct and all about you, our customer. We want you to know, before you buy a STYRKA product, that we are committed to – and invested in – making sure you have a wonderful and world-class experience. At STYRKA, we strive to make sure your experience in the field is a great one. And we stand behind our products to do just that. That’s why the STYRKA Pride Warranty is so simple. In the event of damage or malfunction, we will repair or replace your STYRKA product free of charge. No questions asked. No registration required. No receipt needed. No matter who bought it. The only caveat The warranty doesn’t cover theft, loss or intentional damage. It gets better. Send us your STYRKA product and we’ll clean and tune it up once per year. Regular maintenance helps keep your STYRKA performing like the day you bought it. Again, it’s all about the experience, and we want yours with STYRKA to be the best.
Rifle Scope Product Features
About this item
All lens surfaces are coated multiple times utilizing our proprietary SXL anti-reflective coatings for maximum brightness and optimal color, sharpness and image contrast
Blackened lens edges block stray light for reduced reflection and glare, enhancing image contrast
Rugged erector tube system is precision machined to maintain critical accuracy and point-of-impact in extreme hunting situations
1″ 6061-T6 aircraft-grade aluminum one-piece tube construction that is strong and durable
Waterproof and nitrogen purged to prevent internal fogging
4-12×50 Riflescope
Best-in-class Styrka S3 riflescopes offer far more value. Make every shot count with a riflescope built to give you excellent performance, without excessive cost. The 4-12×50 gives you added magnification, parallax adjustment and the additional light-gathering capability of a 50mm lens.
Features And Benefits
STYRKA Optics
Introducing STYRKA, a line of optics dedicated to providing hunters with outstanding products. We think it’s time for a hunting optics company to really stand behind their product. To make a commitment of excellence to you, the customer.
SXL Fully Multi-Coated Optics
All lens surfaces are coated multiple times utilizing our proprietary SXL anti-reflective coatings for maximum brightness and optimal color, sharpness and image contrast.
1-Inch 6061-T6 Aluminum Tube
One-piece aircraft grade aluminum tube construction that is strong, durable and lightweight.
Features And Benefits
Side Focus Adjustment
Allows you to make quick parallax adjustment while maintaining your shooting position.
Blackened Lens Edges
Block stray light for reduced reflection and glare, enhancing image contrast.
Fast Focus Eyepiece
Allows you to quickly and easily adjust the reticle focus to your eye.
Waterproof and Fogproof
Fully sealed housing filled with dry nitrogen gas for performance in all conditions; submersion tested for 30 minutes in 1 meter (3.3 feet) of water.
Model Number ST-91040 ST-91041 ST-91000 ST-91010
Magnification 4-12x 4-12x 4x 2-7x
Objective Lens Diameter 50mm 50mm 32mm 32mm
Reticle Plex BDC Plex Plex
Field of View (degrees) 5.1° ” 1.7° 5.1° ” 1.7° 4.8° 8.9° – 2.5°
Field of View (feet @ 100yds) 26.8 ” 8.8ft 26.8 ” 8.8ft 25.4ft 46.9 ” 13.2ft
Tube Diameter 1 inch 1 inch 1 inch 1 inch
Parallax Adjustment Yes Yes No No
Parallax Setting 20yds ” 20yds ” 50yds 75yds
Exit Pupil 12.5 ” 4.2mm 12.5 ” 4.2mm 8 mm 14.5 ” 4.6mm
Eye Relief 4.1 ” 3.9in 4.1 ” 3.9in 3.94in 4.69 ” 3.9in
Adjustment Gradations (clicks) MOA MOA MOA MOA
Elevation Adjustment Range 60 MOA 60 MOA 60 MOA 60 MOA
Windage Adjustment Range 60 MOA 60 MOA 60 MOA 60 MOA
Lens Coatings SXL Fully Multi-Coated SXL Fully Multi-Coated SXL Fully Multi-Coated SXL Fully Multi-Coated
Waterproof Yes Yes Yes Yes
Fogproof Yes Yes Yes Yes
Weight 21.1 oz 21.1 oz 15.1 oz 15.8 oz
Focal Plane Second Second Second Second
Model Number ST-91015 ST-91016 ST-91020 ST-91021
Magnification 2-7x 2-7x 3-9x 3-9x
Objective Lens Diameter 32mm 32mm 40mm 40mm
Reticle Plex BDC Plex BDC
Field of View (degrees) 8.9° – 2.5° 8.9° – 2.5° 7.2° ” 2.4° 7.2° ” 2.4°
Field of View (feet @ 100yds) 46.9 ” 13.2ft 46.9 ” 13.2ft 37.7 ” 12.3ft 37.7 ” 12.3ft
Tube Diameter 1 inch 1 inch 1 inch 1 inch
Parallax Adjustment No No No No
Parallax Setting 100yds 100yds 100yds 100yds
Exit Pupil 14.5 ” 4.6mm 14.5 ” 4.6mm 13.3 ” 4.4mm 13.3 ” 4.4mm
Eye Relief 4.69 ” 3.9in 4.69 ” 3.9in 4.4 ” 3.8in 4.4 ” 3.8in
Adjustment Gradations (clicks) MOA MOA MOA MOA
Elevation Adjustment Range 60 MOA 60 MOA 60 MOA 60 MOA
Windage Adjustment Range 60 MOA 60 MOA 60 MOA 60 MOA
Lens Coatings SXL Fully Multi-Coated SXL Fully Multi-Coated SXL Fully Multi-Coated SXL Fully Multi-Coated
Waterproof Yes Yes Yes Yes
Fogproof Yes Yes Yes Yes
Weight 15.8 oz 15.8 oz 17.4 oz 17.4 oz
Focal Plane Second Second Second Second
About the Styrka Manufacturer
Styrka is a premium maker for firearm scopes, optics, mounting solutions, and other components used for firearms like rifles and long guns. They innovate and build their mounts and related products by applying elements which are long lasting and durable. This includes the Styrka S3 Series 4-12×50 Plex Riflescope, Side Focus, Black, ST-91040-Aircraft Grade Aluminum 1″ Tube, Waterproof, Fully Multi-Coated, Bright, Crisp, Sharp Images-Hunting Rifle Scope – Styrka Strong by Styrka. For more shooting items, visit their site.
Information Optics
Rifle scopes allow you to exactly align a rifle at various targets by lining up your eye with the target over a range. They do this through magnifying the target using a set of lenses within the scope. The scope’s positioning can be dialed in to account for many environmental factors like wind speed and elevation decreases to make up for bullet drop.
The scope’s purpose is to help the shooter understand exactly where the bullet will land based upon the sight picture you are viewing via the optic as you line up the scope’s crosshair or reticle with the intended point of impact. Most modern-day rifle optics have about 11 parts which are found within and on the exterior of the scope. These optic pieces consist of the rifle scope’s body, lenses, windage and elevation dials or turrets, objective focus rings, and other elements. Learn about the eleven parts of rifle glass.
About Glass Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Considering the optimal type of rifle optic is based around what type of shooting you plan on doing.
Info on First Focal Plane Scopes
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These styles of scopes are helpful for:
- Quick acquisition, far away kinds of shooting
- Shooting situations where computations are very little
- Experienced shooters who know their aim point “hold over” as well as “lead” relationships for their firearm
- Shooters who don’t mind the reticle is enlarged and takes up more visual eyesight area than a SFP reticle
About Second Focal Plane Glass
Second focal plane optics (SFP) come with the reticle behind the magnification lens. This triggers the reticle to remain at the exact same overall size in connection with the volume of magnification being used. The end result is that the reticle measurements adapt based upon the magnification employed to shoot over lengthier ranges considering that the reticle measurements represent distinct increments which differ with the zoom. In the FFP example with the SFP optic, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick measurement. These sorts of optics work for:
- Far away styles of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots take place within shorter ranges and spaces
- Shooters who choose a clearer optic picture without room taken up by the bigger FFP reticle
Magnification for Optics
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.
Info on Fixed Single Power Lens Optics
A single power rifle scope will have a magnification number designator like 4×32. This means the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this kind of scope can not fluctuate considering that it is a fixed power optic.
Adjustable Power Lens Scope Facts
Variable power rifle scopes use enhanced power. The power adjustment is achieved by making use of the power ring part of the scope near the rear of the scope by the eye bell.
Optic Power and Range Correlation
Here are some advised scope power levels and the ranges where they can be effectively used. Always remember that higher magnification glass will not be as efficient as lower powered glass because increased zoom can be a detractor. The same applies to extended ranges where the shooter needs to have adequate power to see precisely where to properly aim the rifle.
Details on Rifle Scope Lens Coating
All contemporary rifle optic and scope lenses are covered in special coatings. There are various types and qualities of glass finishings. Lens covering can be an essential element of a rifle when looking into luxury rifle optics and targeting systems. The lenses are one of the most significant pieces of the glass considering they are what your eye sees through while sighting a rifle in on the target. The finishing on the lenses shields the lens surface and also helps with anti glare capabilities from excess light and color discernibility.
HD Versus ED Lenses
Some optic companies even use “HD” or high-definition glass coatings which use various procedures, aspects, polarizations, and chemical applications to enhance a wide range of colors and viewable target visibility through lenses. This high-def coating is frequently used with higher density lens glass which drops light’s opportunity to refract by means of the lens glass. Some scope corporations use “HD” to describe “ED” signifying extra-low dispersion glass. ED deals with how colors are presented on the chromatic spectrum and the chromatic aberration or deviance which is similarly called color distortion or fringing. Chromatic aberration is often visible over things with hard edges and outlines as light hits the object from various angles.
Single Coating Versus Multi-Coating
Various optic lenses can likewise have different coatings used to them. All lenses usually have at least some type of treatment or coating applied to them prior to being used in a rifle scope or optic.
Single covered lenses have a treatment applied to them which is normally a protective and boosting multi-purpose treatment. This lens treatment can shield the lens from scratches while decreasing glare and other less advantageous things experienced in the shooting environment while sighting in with the optic. The quality of a single layered lens depends upon the scope maker and how much you paid for it. Both the make and cost are signs of the lens quality.
Some scope producers 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 developing the rifle scope.
Anti-water Lens Coverings
Water on a lens does not assist with preserving a clear sight picture through a scope whatsoever. Lots of top of the line or premium optic producers will coat their lenses with a hydrophobic or hydrophilic coating. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It provides protection for the exterior surfaces of the Steiner glass lens so the water molecules can not bind to it or create surface tension. The outcome is that the water beads slide off of the scope to keep a clear, water free sight picture.
Choices for Mounting Scopes on Long Guns
Installing options 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 scope mounts which cradle the scope. These different kinds of mounts also typically can be found in quick release variations which use throw levers which permit rifle operators to quickly install and remove the optics.
Hex Key Rifle Scope Ring Mounts
Normal, 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 a couple of separate rings to support the optic, and are made from 7075 T6 billet aluminum which is designed for long distance precision shooting. This type of scope mount is fine for rifles which require a long lasting, rock solid mount which will not move no matter how much the scope is moved or abused.
Rifle Scope 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 even be switched out if they all use a compatible style mount. These types of mounts are convenient for long guns which are transported a lot, to remove the optic from the rifle for protecting the scope, or for optics which are used between numerous rifles or are situationally focused.
Details on Scope Tube Sealing and Gas Purging
Wetness inside your rifle scope can destroy a day of shooting and your pricey optic by triggering fogging and developing residue within the scope’s tube. Many scopes protect against humidity from entering the optical tube with a system of sealing O-rings which are water resistant. Typically, these water-resistant scopes can be submerged within 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be sufficient moisture content avoidance for basic use rifles, unless you plan on taking your rifle aboard a watercraft and are concerned about the scope still performing if it is submerged in water and you can still salvage the gun.
Gas Purged Glass Tubes
Another component of preventing the accumulation of moisture within the rifle scope’s tube is filling the tube with a gas like nitrogen. Since this area is currently occupied by the gas, the scope is less affected by condition alterations and pressure differences from the outside environment which might possibly allow water vapor to permeate in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.
