Description
Rifle Scope Product Details
Sig Sauer SOSBDX32111 SIERRA3 BDX 2.5-8X42 BDX1, Black
Sig Sauer Sosbdx32111: the Sierra3 BDX is a compact and lightweight riflescope designed for ultralight weight rifle, shotgun, muzzleloader and crossbow configurations. With the power of the included BDX technology, it provides your exact holdover dot location on targets when coupled with a BDX capable kilo rangefinder. Featuring exceptional SpectraCoat lenses, Levelplex digital anti-cant, and KinETHIC Kinetic energy transfer indicator, The Sierra3 BDX is incredibly simple to use.
Rifle Scope Product Features
Magnification: 2. 5-8X
Objective: 42mm
Waterproof, Fog proof
Spectra Coat
Eye relief: 4. 41″-3. 46″
Exit pupil range: 8. 8-4Mm
Field of view: 39. 8-13. 2 ft @ 100 yds
About the Sig Sauer Brand
Sig Sauer is a premium company for firearm scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They innovate and make their scopes and related products choosing materials which are long lasting and durable. This includes the Sig Sauer SOSBDX32111 SIERRA3 BDX 2.5-8X42 BDX1, Black by Sig Sauer. For additional shooting products, visit their website.
Info Rifle Optics
Rifle scopes allow you to exactly align a rifle at different targets by lining up your eye with the target over a distance. They do this through magnifying the target using a set of lenses inside the scope. The scope’s positioning can be adapted to take into account many environmental aspects like wind and elevation increases to make up for bullet drop.
The scope’s purpose is to understand precisely where the bullet will land based upon the sight picture you are viewing via the optic as you align the scope’s crosshair or reticle with the intended target. Most modern-day rifle scopes and optics have around eleven parts which are found internally and outside of the scope. These scope parts include the rifle scope’s body, lenses, elevation dials or turrets, objective focus rings, and other elements. Learn about the eleven parts of rifle scopes.
The Styles of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The type of focal plane a scope has identifies where the reticle or crosshair is located relative to the scopes zoom. It actually suggests the reticle is located behind or ahead of the magnification lens of the scope. Deciding on the most beneficial form of rifle scope is based upon what style of hunting or shooting you plan on undertaking.
First Focal Plane Scope Facts
Focal plane scopes (FFP) come with the reticle in front of the magnifying lens. This triggers the reticle to increase in size based on the level of magnification being used. The result is that the reticle measurements are the same at the magnified range as they are at the non amplified range. For example, one tick on a mil-dot reticle at one hundred yards with no “zoom” is still the very same tick at one hundred yards with 5x “zoom”. These types of scopes are beneficial for:
- Quick acquisition, far away types of shooting
- Shooting scenarios where computations are low
- Experienced shooters who have an idea for their target “hold over” as well as “lead” correlations for their rifles
- Shooters who don’t mind the reticle is bigger and takes up more visual eyesight area than a SFP reticle
Second Focal Plane Scope Facts
Second focal plane scopes (SFP) feature the reticle to the rear of the zoom lens. This causes the reticle to stay at the very same dimensions in connection with the quantity of magnification being used. The result is that the reticle dimensions change based on the magnification employed to shoot over greater distances due to the fact that the reticle markings represent distinct increments which vary with the zoom. In the FFP illustration with the SFP scope, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick reticle measurement. These particular varieties of optics are convenient for:
- Long distance forms of shooting where shooters have additional time to make ballistic estimations
- Shooting where most of the shots take place within shorter ranges and distances
- Shooters who prefer a clearer optic picture without room taken up by the larger size FFP reticle
About Rifle Optic Magnification
The amount of zoom a scope provides is determined by the diameter, thickness, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Fixed Power Lens Rifle Optics
A single power rifle optic uses a zoom number designator like 4×32. This indicates the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of scope can not change because it is set from the factory.
Info on Variable Power Lens Rifle Glass
Variable power rifle scopes use variable power levels. The power adjustment is handled 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 Optics
Here are some suggested scope powers and the distances where they can be effectively used. Bear in mind that high magnification scopes will not be as effective as lower magnification level scopes since too much magnification can be a bad thing. The exact same idea goes for extended distances where the shooter needs increased power to see precisely where to best aim the rifle at the target.
Rifle Glass Lens Finishing
All modern-day rifle optic and scope lenses are coated. There are different types and qualities of lens coverings. When shopping for luxury rifle scope systems, Lens finish can be a significant aspect of a rifle. The lenses are one of the most essential pieces of the scope given that they are what your eye sees through while sighting a rifle in on the point of impact. The coating on the lenses shields the lens exterior and also helps with anti glare from refracted sunrays and color perception.
Details on Lens Coatings – HD Versus ED
Some scope makers also use “HD” or high-definition lens coatings which use different procedures, polarizations, elements, and chemicals to draw out various colors and viewable quality through the lens. Some scope manufacturers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Finishing Versus Multi-Coating for Rifle Scopes
Different scope lenses can also have various finishings applied to them. All lenses usually have at least some type of treatment or coating applied to them before they are used in a rifle scope or optic assembly. Because the lens isn’t simply a raw piece of glass, they require performance enhancing coatings. It is part of the finely tuned optic. It needs to have a coating applied to it so that the lens will be efficiently usable in lots of types of environments, degrees of light (full light VS shaded), and other shooting conditions.
Single coated lenses have a treatment applied to them which is normally a protective and boosting multi-purpose treatment. This lens treatment can preserve 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 company and how much you spent for it. Both are signs of the lens quality.
Some scope manufacturers also make it a point to specify if their optic lenses are coated or “multi” coated. Being “much better” depends on the manufacturer’s lens treatment technology and the quality of materials used in constructing the rifle scope.
Anti-water Rifle Scope Lens Finish
Water on a scope lens does not help with preserving a clear sight picture through an optic in any way. Many top of the line and premium scope makers will coat their lenses with a hydrophilic or hydrophobic coating. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It treats the exterior surfaces of the Steiner optic lens so the H2O particles can not bind to it or produce surface tension. The result is that the water beads move off of the scope to maintain a clear, water free sight picture.
Scope Installation Alternatives
Mounting approaches for scopes can be found in a couple of choices. There are the basic scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These different types of mounts also generally are made in quick release versions which use manual levers which enable rifle shooters to quickly install and dismount the scopes.
Hex Key Rifle Scope Ring Mounts
Basic, clamp-on design mounting optic rings use hex head screws to install to the flattop design Picatinny scope mounting rails on rifles. These styles of scope mounts use double detached rings to support the optic, and are usually constructed from 7075 T6 billet aluminum or similar materials which are designed for far away precision shooting. This form of scope mount is good for rifle systems which require a long lasting, hard use mount which will not move no matter just how much the scope is moved about or jarring the rifle takes. These are the style of mounts you really want to have for a devoted optics system on a reach out and touch someone hunting or interdiction long gun that will seldom need to be altered or recalibrated. Blue 242 Loctite threadlocker can also be used on the scope mount’s screws to keep the hex screw threads from backing out after they are mounted firmly in place. An example of these mounting rings are the 30mm style made by the Vortex Optics brand. The set typically costs around $200 USD
Rifle Glass Mounts with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to quickly remove a scope from a rifle and reattach it to a different rifle. A wide range of scopes can also be switched out if they all use a similar designed mount. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect solidly to a flat top style Picatinny rail. This enables the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while retaining the original sighting settings. These kinds of mounts are useful and beneficial for rifles which are moved a lot, to remove the optic from the rifle for protection, or for scopes which are employed between numerous rifles. An example of this mount type is the 30mm mount from Vortex Optics. It normally costs around $250 USD
Info Around Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle optic can destroy a day of shooting and your expensive optic by causing fogging and producing residue inside of the scope tube. Most scopes avoid moisture from going into the scope tube with a system of sealing O-rings which are waterproof.
Gas Purged Rifle Scope Tubes
Another element of preventing the buildup of moisture inside of the rifle scope’s tube is filling the tube with a gas like nitrogen. Because this space is already occupied by the gas, the scope is less impacted by climate alterations and pressure variations from the outdoor environment which may possibly 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 look for.
