Description
Last update on August 14, 2022 // Source: Amazon API
Rifle Scope Product Details
Schmidt Bender Zenith 3-12×50 FD7 Rifle Scope with BDC H
Schmidt Bender 3-12×50 Zenith LM FD7 ASV H Black Riflescope 674-811-707-30-05
Rifle Scope Product Features
About the Schmidt & Bender Scope Maker
Schmidt & Bender is a premium producer for firearm scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They style and manufacture their mounts and related products making the most of elements which are durable and long lasting. This includes the Schmidt Bender Zenith 3-12×50 FD7 Rifle Scope with BDC H by Schmidt & Bender. For additional shooting items, visit their site.
Information Glass
Rifle scopes allow you to exactly aim a rifle at different targets by lining up your eye with the target over a range. They accomplish this through magnification by employing a series of lenses within the scope. The scope’s alignment can be adjusted to take into account various natural things like wind and elevation increases or decreases to account for bullet drop.
The scope’s function is to understand exactly where the bullet will land based on the sight picture you are seeing using the scope as you line up the scope’s crosshair or reticle with the intended target. A lot of modern-day rifle scopes and optics have around 11 parts which are found inside and outside of the scope body. These parts consist of the rifle scope’s body, lenses, elevation turrets or dials, objective focus rings, and other parts. Learn about the eleven parts of rifle optics.
About Rifle Optic Types
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The type of focal plane a scope has decides where the reticle or crosshair is located in connection with the scopes magnification. It literally indicates the reticle is behind or before the magnifying lens of the optic. Considering the very best form of rifle optic is based on what style of hunting or shooting you plan on doing.
First Focal Plane Optic Facts
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These styles of scopes are beneficial for:
- Quick acquisition, far away types of shooting
- Shooting scenarios where calculations are small
- Experienced shooters who have an idea for their aim point “hold over” plus “lead” ratios for their firearms
- Shooters who don’t mind the reticle is bigger and requires more visual eyesight area than a SFP reticle
About Second Focal Plane Glass
Second focal plane scopes (SFP) come with the reticle to the rear of the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick measurement.
- Long distance kinds of shooting where shooters have additional time to make ballistic computations
- Shooting where most shots take place within shorter ranges and spaces
- Shooters who desire a clearer optic sight picture without room taken up by the enlarged FFP reticle
About Scope Zoom
The quantity of zoom a scope provides is identified by the diameter, thickness, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Power Lens Rifle Scopes
A single power rifle optic or scope will have a zoom number designator like 4×32. This suggests the magnification power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of scope can not fluctuate since it is a fixed power scope.
Variable Power Lens Rifle Glass
Variable power rifle scopes have adjustable power. It will note the zoom degree in a format like 2-10×32. These numbers suggest the zoom of the scope could be adjusted between 2x and 10x power. This also includes the power levels in-between 2 and 10. The power modification is achieved by making use of the power ring part of the scope near the rear of the scope by the eye bell.
Power Levels and Range
Here are some suggested scope powers and the ranges where they could be successfully used. Highly magnified optics will not be as beneficial as lower magnification glass given that too much zoom can be a bad thing. The exact same idea goes for extended ranges where the shooter needs sufficient power to see precisely where to best aim the rifle at the target.
Glass Lens Coating
All modern-day rifle glass lenses are covered. Lens finishing can be a vital aspect of a rifle when purchasing high end rifle optics and scope equipment.
HD Versus ED Lenses
Some scope producers also use “HD” or high-definition lens finishings which use different techniques, polarizations, chemicals, and aspects to draw out separate colors and viewable definition through the lens. Some scope producers use “HD” to refer to “ED” meaning extra-low dispersion glass.
About Single Covering Versus Multi-Coating
Various scope lenses can even have different coatings 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. Because the lens isn’t simply a raw piece of glass, they require performance enhancing coatings. It becomes part of the carefully tuned optic. It needs to have a coating put on it so that the lens will be optimally usable in numerous kinds of environments, degrees of sunshine (full VS shaded), and other shooting conditions.
This lens treatment can protect 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 coated lens depends on the scope producer and how much you paid for it.
Some scope manufacturers similarly make it a point to specify if their optic lenses are coated or “multi” covered. Being “much better” depends on the manufacturer’s lens treatment technology and the quality of materials used in constructing the rifle scope.
Anti-water Covering for Glass
Water on a scope’s lens does not assist with maintaining a clear sight picture through an optic in any way. Lots of top of the line and premium scope producers will coat their lenses with a hydrophilic or hydrophobic finish. The Steiner Optics Nano-Protection is a fine example of this type of treatment. It provides protection for the surface of the Steiner optic lens so the H2O particles can not bind to it or create surface tension. The outcome is that the water beads move off of the scope to keep a clear, water free sight picture.
Alternatives for Installing Scopes on Firearms
Mounting approaches for scopes can be found in a couple of options. There are the standard scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These different kinds of mounts also normally can be found in quick release variations which use throw levers which permit rifle shooters to quickly install and remove the scope.
Hex Key Rifle Glass Rings
Basic, clamp-on design mounting scope rings use hex head screws to install to the flattop design Picatinny scope mount rails on the tops of rifles. These varieties of scope mounts use a pair of individual rings to support the optic, and are made from 7075 T6 billet aluminum which are created for long distance accuracy shooting. This form of scope mount is excellent for rifles which need a resilient, rock solid mount which will not change regardless of just how much the scope is moved or jarring the rifle takes. These are the style of mounts you should have for a dedicated optics system on a long distance hunting or tournament long gun which will pretty much never need to be changed or recalibrated. Blue 242 Loctite threadlocker can additionally be used on the scope mount screws to keep the hex screw threads from wiggling out after they are installed securely in position. An example of these mounting rings are the 30mm type from Vortex Optics. The set usually costs around $200 USD
Quick-Release Cantilever Rifle Glass Ring Mounts
These kinds of quick-release rifle scope mounts can be used to quickly take off a scope from a rifle and reattach it to a different rifle. Several scopes can also be switched out if they all use a similar style mount. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers connect solidly to a flat top design Picatinny rail. This permits the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while retaining precision. These types of mounts are useful and beneficial for shooting platforms which are moved a lot, to take off the optic from the rifle for protection, or for aiming systems which are utilized in between numerous rifles. An example of this mount style is the 30mm mount from the Vortex Optics manufacturer. It normally costs around $250 USD
Info Around Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle optic can destroy a day on the range and your pricey optic by triggering fogging and developing residue inside of the scope’s tube. Most scopes prevent moisture from getting in the optical tube with a series of sealing O-rings which are water resistant. Usually, these water resistant optics can be immersed under 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be sufficient moisture content avoidance for conventional use rifles, unless you anticipate taking your rifle sailing and are concerned about the scope still working if it falls overboard and you can still retrieve the firearm.
Rifle Optic Gas Purging
Another part of avoiding the accumulation of moisture inside of the rifle scope tube is filling the tube with a gas like nitrogen. Because this space is already taken up by the gas, the scope is less affected by temperature level shifts and pressure variations from the outside environment which may possibly allow water vapor to leak in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to look for.
