Description
Rifle Scope Product Details
Bushnell 613948C Banner Riflescope, 3-9X 40 Matte Black Multi-X Reticle, Clam Pack
Bushnell 3-9×40 banner riflescope. Bushnell purpose-built the 3-9×40 banner riflescope to perform from the first crack of pre-dawn light to the last dying rays of sunlight. A useful zoom range provides the magnification required for medium to long range accuracy without the associated dimming of the image brightness often seen with high-powers, while the larger 40mm objective draws in all available light. Bushnell employs their proprietary DDB (dusk & dawn brightness) lens coating system that is specifically engineered to increase image quality and brightness in low-light conditions. To get you on-target are covered turrets with 1/4 MOA impact point Correction and 60 MOA windage and elevation adjustment ranges to allow users to compensate for most terrain or conditions. Its 1″ one-piece aluminum Main-Tube has a matte black anodized finish, and is nitrogen-filled for water and fogproof performance in all weather. This version of the riflescope is offered here in clamshell packaging. Features: – Multi-X reticle, SFP – 1″ one-piece Main-Tube – 1/4 MOA/click impact point Correction – 60 MOA windage/elevation adjustment – nitrogen-filled water and fogproof – anodized aluminum housing – anti-reflection DDB multicoated optics – matte black finish – clamshell packaging. Specifications: – magnification: 3 – 9x – objective lens diameter: 40mm – Main-Tube diameter: 1″ – reticle: Multi-X duplex Crosshair, SFP – field of view: 40.0 – 14.0′ at 100 Yd/13.6 – 4.7M At100 M- Parallax Correction: N/a – eye relief: 3.3″/8.4 CM – exit Pupil diameter: 13 – 4.4 mm – impact point Correction: 1/4 MOA per click – windage/elevation adjustment: 60 MOA – weatherproofing: nitrogen-filled, water and fogproof – battery: N/a – length: 12.0″/30.5 CM – weight: 13.0 oz/368.5 G
Rifle Scope Product Features
Magnification: 3 – 9x
1 inch one-piece main-tube
Anodized aluminum housing
About the Bushnell Scope Maker
Bushnell is a premium producer for long gun scopes, optics, mounting solutions, and other accessories used for firearms like rifles and long guns. They design and make their products by applying building materials which are resilient and long lasting. This includes the Bushnell 613948C Banner Riflescope, 3-9X 40 Matte Black Multi-X Reticle, Clam Pack by Bushnell. For additional shooting items, visit their website.
All About Glass
Rifle scopes allow you to specifically align a rifle at different targets by lining up your eye with the target over a distance. They do this through magnification by employing a set of lenses inside the scope. The scope’s positioning can be adapted for the consideration of various environmental aspects like wind and elevation increases to account for bullet drop.
The scope’s purpose is to understand exactly where the bullet will land based on the sight picture you are viewing via the scope as you align the scope’s crosshair or reticle with the target. A lot of contemporary rifle optics have around 11 parts which are arranged within and on the exterior of the scope. These optic pieces consist of the rifle scope’s body, lenses, modification dials, objective focus rings, and other parts. Learn about the eleven parts of rifle optics.
Rifle Optic Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Choosing the finest type of rifle optic is based on what type of shooting you plan on doing.
First Focal Plane Optics
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These kinds of scopes are helpful for:
- Quick acquisition, long distance kinds of shooting
- Shooting situations where estimations are minimal
- Experienced shooters who understand their aim point “hold over” and also “lead” equations for their firearms
- Shooters who don’t mind the reticle is bigger and takes up more visual eyesight area than a SFP reticle
About Second Focal Plane Scopes
Second focal plane optics (SFP) come with the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick.
- Far away kinds of shooting where shooters have increased time to make ballistic computations
- Shooting where most shots take place within shorter spaces and ranges
- Shooters who choose a clearer optic sight picture with less room taken up by the larger sized FFP reticle
Magnification for Rifle Glass
The quantity of magnification a scope offers is determined 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 Power Lens Optics
A single power rifle scope and optic uses a magnification number designator like 4×32. This implies the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this kind of scope can not fluctuate considering that it is a fixed power optic.
Adjustable Power Lens Optics
Variable power rifle scopes have adjustable power. It will note the zoom degree in a format like 2-10×32. These numbers suggest the magnification of the scope can be changed in between 2x and 10x power. This also involves the powers in-between 2 and 10. The power modification is achieved by applying the power ring component of the scope near the back of the scope by the eye bell piece.
The Power Level and Range Correlation of Glass
Here are some suggested scope power levels and the distances where they may be efficiently used. Remember that high magnification scopes and optics will not be as effective as lower magnification level glass since excessive zoom can be a bad thing. The same relates to longer ranges where the shooter needs to have adequate power to see where to properly aim the rifle.
Scope Lens Finish
All top teir rifle glass lenses are layered. Lens covering is an important aspect of a rifle system when considering high end rifle optics and scope setups.
HD Versus ED Rifle Optic Lens Coatings
Some scope brands also use “HD” or high-definition lens coverings which use various methods, elements, polarizations, and chemicals to draw out separate colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Covering Versus Multi-Coating for Rifle Glass
Various optic lenses can also have different finishings applied to them. All lenses normally have at least some type of treatment or finish applied to them before they are used in a rifle scope or optic. Since the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It is part of the finely tuned optic. It must have a coating placed on it so that it will be optimally usable in many types of environments, degrees of sunshine (full VS shaded), and other shooting conditions.
Single covered lenses have a treatment applied to them which is generally a protective and boosting multi-purpose treatment. This lens treatment can preserve the lens from scratches while reducing glare and other less beneficial things experienced in the shooting environment while sighting in with the optic. The quality of a single layered lens depends on the scope maker and how much you spent paying for it. Both the manufacturer and amount are indicators of the lens quality.
Some scope makers likewise make it a point to define if their optic lenses are layered or “multi” covered. This means the lens has numerous treatments applied to the surfaces of the glass. If a lens receives numerous treatments, it can indicate that a producer is taking several actions to combat various environmental aspects like an anti-glare finish, a scratch resistant anti-abrasion coating, followed by a hydrophilic coating. This also doesn’t always imply the multi-coated lens is better than a single layered lens. Being “much better” is dependent on the manufacturer’s lens treatment innovation and the quality of materials used in building the rifle glass.
Hydrophobic Lens Finishes
Water on a lens doesn’t help with keeping a clear sight picture through a scope at all. Numerous top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic finish.
Rifle Scope Mounting Choices
Installing approaches for scopes can be found in a couple of choices. There are the standard scope rings which are individually installed to the scope and one-piece scope mounts which cradle the scope. These different kinds of mounts also typically come in quick release versions which use manual levers which allow rifle shooters to rapidly mount and dismount the glass.
Hex Key Rifle Scope Rings
Standard, clamp type mounting scope rings use hex head screws to position to the flattop style Picatinny scope mounting rails on the tops of rifles. These forms of scope mounts use a pair of independent rings to support the optic, and are normally constructed from 7075 T6 billet aluminum which are created for long distance accuracy shooting. This type of scope mount is exceptional for rifles which need to have a durable, unfailing mount which will not change despite just how much the scope is moved about or jarring the rifle takes. These are the type of mounts you want for a devoted optics setup on a long distance hunting or interdiction firearm which will almost never need to be altered or adjusted. Blue 242 Loctite threadlocker can also be used to stop the hex screw threads from wiggling out after they are installed tightly in position. An example of these mounting rings are the 30mm type made by the Vortex Optics company. The set usually costs around $200 USD
Quick-Release Cantilever Optic Rings
These types of quick-release rifle scope mounts can be used to quickly connect and detach a scope from a rifle before reattaching it to a different rifle. Numerous 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 carried a lot, to remove the optic from the rifle for protection, or for scopes which are used in between multiple rifles.
Sealing and Gas Purging for Rifle Optic Tubes
Wetness inside your rifle scope can ruin a day of shooting and your costly optic by triggering fogging and generating residue within the scope’s tube. Most optics prevent moisture from entering the optical tube with a system of sealing O-rings which are water resistant. Typically, these water-resistant optics can be immersed beneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be more than enough moisture prevention for basic use rifles, unless you plan on taking your rifle aboard watercrafts and are worried about the scope still performing if it goes overboard and you can still retrieve the firearm.
Details on Scope Tube Gas Purging
Another element of preventing the accumulation of wetness inside of the rifle optic’s tube is filling the tube with a gas like nitrogen. Given that this space is already occupied by the gas, the optic is less altered by climate changes and pressure distinctions from the external environment which may 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.
