Description
Rifle Scope Product Details
PRESMA 4-16X50AOL EX Series Rifle Scope Second Focal Plane, Bundle with Caps & Mount
Excellent quality riflescope with clear, great-quality glass. Packed full of features that make for a great shooting experience: – Easy select reticle illumination buttons (independent colors) w/ click to cycle brightness- Level bubble- One piece all-aluminum tube- RXR reticle with the best of Mil-Dot & BDC feature- Objective Lens Adjustment (AO) via front lens dialGreat value for money with image-clarity and features usually found on high price scopes. Backed up with a Lifetime Limited from the manufacturer, Presma Inc which covers scope and electrics. Damage caused by battery is excluded – recommended to remove battery during off-season.
Rifle Scope Product Features
Imported
50mm Riflescope with 4x to 16x Magnification
1″ tube diameter, Second Focal Plane (SFP)
Presma RXR Reticle, Black with Red, Green, Blue illumination (optional)
Comes ready to mount with Picatinny (21mm wide) aluminum mount, lens caps, sunshade, cloth + manual
Clear Glass, Lifetime Limited (US only, non-transferable)
About the Presma Scope Maker
Presma is a premium supplier for long gun scopes, optics, mounts, and other accessories used for firearms like rifles and long guns. They style and build their scopes and related products by applying elements which are long lasting and resilient. This includes the PRESMA 4-16X50AOL EX Series Rifle Scope Second Focal Plane, Bundle with Caps & Mount by Presma. For more shooting products, visit their site.
Rifle Optic Information
Rifle scopes enable you to precisely aim a rifle at different targets by aligning your eye with the target at range. They accomplish this through magnifying the target by utilizing a series of lenses within the scope. The scope’s alignment can be adjusted for consideration of numerous environmental elements like wind speed and elevation decreases to account for bullet drop.
The scope’s purpose is to help shooters understand precisely where the bullet will land based on the sight picture you are seeing via the scope as you line up the scope’s crosshair or reticle with the intended point of impact. The majority of contemporary rifle scopes and optics have about eleven parts which are located internally and outside of the scope body. These parts consist of the rifle scope’s body, lenses, windage dials, focus rings, and other parts. See all eleven parts of a scope.
About Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The kind of focal plane a scope has determines where the reticle or crosshair is located in regard to the scopes magnifying adjustments. It literally implies the reticle is behind or before the magnifying lens of the scope. Deciding upon the very best form of rifle glass is dependent on what type of hunting or shooting you anticipate undertaking.
Info About First Focal Plane Scopes
First focal plane optics (FFP) include the reticle in front of the zoom lens. This triggers the reticle to increase in size based upon the amount of zoom being used. The outcome is that the reticle measurements are the same at the amplified distance as they are at the non amplified range. One tick on a mil-dot reticle at 100 yards with no “zoom” is still the very same tick at one hundred yards with 5x “zoom”. These types of scopes are valuable for:
- Quick acquisition, far away types of shooting
- Shooting circumstances where estimations are low
- Experienced shooters who understand their aim point “hold over” and also “lead” equations for their firearms
- Shooters who do not mind the reticle is enlarged and requires more visual sight area than a SFP reticle
Info on Second Focal Plane Glass
Second focal plane optics (SFP) come with the reticle to the rear of 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.
- Long distance forms of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots occur within much shorter proximities and ranges
- Shooters who would like a clearer optic picture without space taken up by the bigger FFP reticle
Rifle Optic Zoom
The level of scope zoom you need depends upon the form of shooting you want to do. Virtually every kind of rifle optic provides some degree of magnification. The level of magnification a scope supplies is identified by the diameter, density, and curves of the lens glass within the rifle scope. The magnifying level of the optic is the “power” of the glass. This signifies what the shooter is observing through the scope is magnified times the power factor of what can usually be seen by human eyes.
About Single Power Lens Rifle Optics
A single power rifle optic or scope comes with a magnification number designator like 4×32. This suggests the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this type of optic can not fluctuate since it is a fixed power scope.
Adjustable Power Lens Rifle Glass Info
Variable power rifle scopes use enhanced power. The power adjustment is performed by making use of the power ring part of the scope near the back of the scope by the eye bell.
Power and Range Correlations
Here are some advised scope power levels and the distances where they could be effectively used. Remember that higher magnification scopes and optics will not be as practical as lower magnification level scopes because increased zoom can be a negative thing in certain situations. The exact same idea applies to longer ranges where the shooter needs to have increased power to see exactly where to properly aim the rifle.
Glass Lens Finish
All present day rifle glass lenses are coated. Lens finishing can be an important aspect of a rifle when buying high end rifle optics and scope equipment.
Info on Glass Lens Coatings – HD Versus ED
Some rifle scope companies additionally use “HD” or high-def lense finishes that make the most of different procedures, polarizations, elements, and chemicals to draw out various color ranges and viewable definition through lenses. This high-definition finish is frequently used with higher density glass which drops light’s ability to refract by means of the lens glass. Some scope manufacturers use “HD” to describe “ED” signifying extra-low dispersion glass. ED deals with how colors are represented on the chromatic spectrum and the chromatic aberration or deviance which is also called color distortion or fringing. Chromatic aberration may be noticeable around things with hard edges and shapes as light hits the item from particular angles.
Single Finish Versus Multi-Coating
Different optic lenses can also have various finishings applied to them. All lenses typically have at least some type of treatment or finish used to them prior to being used in a rifle scope or optic.
This lens treatment can protect the lens from scratches while decreasing glare and other less beneficial things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope manufacturer and how much you paid for it.
Some scope manufacturers likewise make it a point to define if their optic lenses are coated or “multi” covered. This suggests the lens has numerous treatments applied to the surfaces of the glass. If a lens gets several treatments, it can show that a maker is taking numerous steps to combat various natural factors like an anti-glare finish, a scratch resistant anti-abrasion covering, followed by a hydrophilic finishing. This additionally does not always suggest the multi-coated lens will perform much better than a single layered lens. Being “much better” depends on the producer’s lens treatment solutions and the quality of products used in creating the rifle scope.
Hydrophobic Lens Coatings
Water on a lens does not improve maintaining a clear sight picture through a scope whatsoever. Lots of top of the line or premium optic makers will coat their lenses with a hydrophilic or hydrophobic finish. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It treats the exterior surfaces of the Steiner scope lens so the H2O particles can not bind to it or develop surface tension. The result is that the water beads slide off of the scope to preserve a clear, water free sight picture.
Alternatives for Installing Rifle Scopes on Long Guns
Mounting solutions for scopes can be found in a few choices. There are the standard scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These different types of mounts also generally can be found in quick release versions which use toss levers which enable rifle operators to quickly mount and dismount the scope.
Hex Key Rifle Optic Ring Mounts
Basic, clamp-on style mounting optic rings use hex head screws to mount to the flattop design Picatinny scope mount rails on the tops of rifles. These forms of scope mounts use double separate rings to support the scope, and are normally constructed from 7075 T6 billet aluminum which are made for far away precision shooting. This kind of scope mount is effective for rifle systems which require a resilient, rock solid mount which will not move regardless of just how much the scope is moved about or abuse the rifle takes. These are the style of mounts you should have for a devoted optics system on a reach out and touch someone scouting or competition long gun which will seldom need to be altered or recalibrated. Blue 242 Loctite threadlocker can also be used on the mount screws to keep the hex screw threads from backing out after they are installed tightly in place. An example of these mounting rings are the 30mm type from Vortex Optics. The set normally costs around $200 USD
Quick-Release Cantilever Rifle Scope Ring Mounts
These kinds of quick-release rifle scope mounts can be used to rapidly connect and take off a scope from a rifle. If they all use a comparable design mount, multiple scopes can often be switched out. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach tightly 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 while retaining accuracy. These kinds of mounts come in handy for rifles which are shipped a lot, to take off the scope from the rifle for protection, or for optics which are chosen for use in between multiple rifles. An example of this mount type is the 30mm mount from the Vortex Optics manufacturer. It generally costs around $250 USD
What to Know About Rifle Optic Tube Sealing and Gas Purging
Moisture inside your rifle optic can mess up a day on the range and your expensive optic by inducing fogging and making residue inside of the scope’s tube. A lot of scopes prevent moisture from getting in the optical tube with a series of sealing O-rings which are waterproof. Typically, these water-resistant scopes can be submerged under 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be plenty of moisture prevention for common use rifles for hunting and sporting purposes, unless you intend on taking your rifle aboard a watercraft and are worried about the scope still performing if it is submerged in water and you can still retrieve the firearm.
Rifle Scope Gas Purging
Another part of preventing the accumulation of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Because this area is currently occupied by the gas, the scope is less altered by temperature level changes and pressure distinctions from the external environment which may potentially permit water vapor to seep in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a good rifle scope to seek out.
