Description
Rifle Scope Product Details
Petra Industries, Inc. – Consumer Electronics Replen BSA Optics 30mm Matte Black Finish Red Dot Sight Riflescope
Petra Industries, – Consumer Electronics Replen BSA Optics 30mm Matte Black Finish Red Dot Sight Riflescope
Rifle Scope Product Features
Weaver Style Attachment
30Mm, 11 Position Rheostat
Multi-Purpose Sighting System for Close Quarter and Medium Range Targets
Lightweight Enough for Small Calibers Plinking On The Range, Yet Durable Enough for Large Calibers Used by Hunters and Law Enforcement Departments
30Mm, 11 Position Rheostat
Multi-Purpose Sighting System for Close Quarter and Medium Range Targets
Lightweight Enough for Small Calibers Plicking On The Range, Yet Durable Enough for Large Calibers Used by Hunters and Law Enforcement Departments
About the Petra Industries, Inc. – Consumer Electronics Replen Manufacturer
Petra Industries, Inc. – Consumer Electronics Replen is a premium producer for long gun scopes, optics, mounts, and other components used for firearms like rifles and long guns. They innovate and supply their mounts and related products using elements which are long lasting and resilient. This includes the Petra Industries, Inc. – Consumer Electronics Replen BSA Optics 30mm Matte Black Finish Red Dot Sight Riflescope by Petra Industries, Inc. – Consumer Electronics Replen. For more shooting products, visit their site.
Glass Info
Rifle scopes permit you to precisely align a rifle at various targets by lining up your eye with the target at range. They accomplish this through magnifying the target by using a series of lenses inside the scope. The scope’s alignment can be dialed in to account for separate natural considerations like wind speed and elevation decreases to make up for bullet drop.
The scope’s function is to understand precisely where the bullet will land based upon the sight picture you are seeing using the optic as you line up the scope’s crosshair or reticle with the intended point of impact. Most modern rifle scopes and optics have around 11 parts which are located within and on the exterior of the optic. These optic pieces consist of the rifle scope’s body, lenses, elevation dials or turrets, objective focus rings, and other elements. Learn about the eleven parts of rifle glass.
Rifle Glass Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding on the optimal type of rifle optic depends on what type of shooting you plan on doing.
Info About First Focal Plane Glass
First focal plane optics (FFP) come with the reticle before the magnifying lens. This triggers the reticle to increase in size based on the extent of magnification being used. The outcome is that the reticle measurements are the same at the magnified range as they are at the non magnified range. For example, one tick on a mil-dot reticle at one hundred yards without “zoom” is still the same tick at one hundred yards with 5x “zoom”. These kinds of scopes are valuable for:
- Quick acquisition, far away kinds of shooting
- Shooting situations where estimations are minor
- Experienced shooters who know their target “hold over” as well as “lead” relationships for their weapon
- Shooters who don’t mind the reticle is bigger and occupies more visual sight area than a SFP reticle
Second Focal Plane Optics
Second focal plane optics (SFP) include 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.
- Long distance kinds of shooting where shooters have increased time to make ballistic computations
- Shooting where most shots occur within shorter ranges and distances
- Shooters who prefer a clearer optic picture without space taken up by the larger sized FFP reticle
Details on Scope Magnification
The amount of magnification 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.
Single Power Lens Rifle Optics
A single power rifle optic and scope comes with a magnification number designator like 4×32. This implies the magnification power of the scope is 4x power and the objective lens is 32mm. The zoom of this kind of scope can not adjust given that it is set from the factory.
Info on Adjustable Power Lens Rifle Scopes
Variable power rifle scopes have adjustable power. These types of scopes will list the magnification level in a configuration such as 2-10×32. These numbers indicate the zoom of the scope can be set between 2x and 10x power. This also incorporates the powers in-between 2 and 10. The power shift is achieved by operating the power ring component of the scope near the back of the scope by the eye bell.
The Power Level and Range of Rifle Scopes
Here are some suggested scope power settings and the ranges where they could be efficiently used. Bear in mind that higher magnification optics and scopes will not be as efficient as lower powered optics and scopes since excessive magnification can be a bad thing. The same idea goes for longer distances where the shooter needs to have sufficient power to see precisely where to best aim the rifle at the target.
Lens Finish for Optics
All contemporary rifle optic lenses are coated. There are various types and qualities of glass lens coverings. Lens finish is an essential aspect of a rifle’s setup when looking at high end rifle optics and scope units. The glass lenses are one of the most important components of the scope considering that they are what your eye sees through while sighting a rifle in on the point of impact. The covering on the lenses offers protection to the lens surface area and also helps with anti glare from refracted natural light and color profiles.
Info on Lens Coatings – HD Versus ED
Some scope manufacturers also use “HD” or high-definition lens coatings which use various techniques, polarizations, components, and chemicals to draw out various colors and viewable definition through the lens. Some scope producers use “HD” to refer to “ED” to signify the lens has extra-low dispersion glass.
Single Coating Versus Multi-Coating for Rifle Scopes
Various optic lenses can also have different finishes applied to them. All lenses usually have at least some type of treatment or covering applied to them prior to being used in a rifle scope or optic. Because the lens isn’t simply a raw piece of glass, they require performance enhancing coatings. It is part of the carefully tuned optic. It needs to have a covering placed on it so that the lens will be efficiently functional in numerous kinds of environments, degrees of light (full light VS shaded), and other shooting conditions.
Single coated lenses have a treatment applied to them which is usually a protective and boosting multi-purpose treatment. This lens treatment can preserve the lens from scratches while reducing glare and other less advantageous things experienced in the shooting environment while sighting in with the optic. The quality of a single covered lens depends upon the scope developer and the amount you paid for it. The scope’s maker and cost are signs of the lens quality.
Some scope makers likewise make it a point to define if their optic lenses are layered or “multi” covered. This implies the lens has numerous treatments applied to the surfaces of the glass. If a lens gets multiple treatments, it can prove that a company is taking numerous actions to fight different environmental elements like an anti-glare covering, a scratch resistant anti-abrasion finishing, followed by a hydrophilic finish. This also doesn’t necessarily mean the multi-coated lens is much better than a single layered lens. Being “much better” is dependent on the manufacturer’s lens treatment innovation and the quality of components used in building the rifle optic.
Hydrophobic Lens Finishing
Water on a lens doesn’t help with maintaining a clear sight picture through a scope at all. Numerous top of the line and military grade optic makers will coat their lenses with a hydrophilic or hydrophobic coating.
Optic Installation Alternatives
Installing approaches for scopes can be found in a couple of options. There are the standard scope rings which are separately mounted to the optic and one-piece mounts which cradle the scope. These various types of mounts also normally can be found in quick release versions which use toss levers which permit rifle operators to rapidly mount and remove the scope.
Hex Key Rifle Glass Rings
Normal, clamp style 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 different rings to support the optic, and are often made from 7075 T6 billet aluminum which is developed for long range precision shooting. This type of scope mount is wonderful for rifles which need a resilient, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Scope Rings
These kinds 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 complementary designed mount. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers connect nicely to a flat top design Picatinny rail. This enables the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while maintaining the original sighting settings. These kinds of mounts are useful and beneficial for shooting platforms which are transported a lot, to remove the glass from the rifle for protection, or for scopes which are adopted between a number of rifles. An example of this mount style is the 30mm mount from Vortex Optics. It usually costs around $250 USD
About Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle scope can mess up a day of shooting and your expensive optic by triggering fogging and producing residue inside of the scope tube. The majority of scopes avoid moisture from going into the scope tube with a system of sealing O-rings which are water resistant.
Rifle Glass Gas Purging
Another part of preventing the buildup of wetness inside of the rifle scope’s tube is filling the tube with a gas like nitrogen. Since this space is currently occupied by the gas, the scope is less affected by condition shifts and pressure differences from the outside environment which could possibly allow water vapor to permeate in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a good rifle scope to look for.
