Description
Last update on August 9, 2022 // Source: Amazon API
Rifle Scope Product Details
Presma 1-6×28 Precision Rifle Scope/Etched Illuminated Reticle Emerald, Multi-Coated Lenses/Fog, Waterproof, Shockproof
Presma 1-6×28 RXR6 Professional Series Precision Scope, Etched RXR6 Reticle, Tri Illumination, Fully Multi-Coated Lenses, 35mm Tube, CR2032, Black, RXR6 1-6X28
Rifle Scope Product Features
Presma Precision Hunting Rifle Scope 1-6X28, with many Easy-to-use features and LIFETIME WARRANTY
A scope that will grow with you in experience, from beginner to Marksman level
Superior Multi-Coated lenses for reduction of glare and reflection, while maximizing light transmission for ultimate image brightness and clarity from edge to edge
Constructed with Single-Piece of premium Aircraft-Grade Aluminum Alloy with 35mm tube diameter body, Cardan joint design, hardened Anodized Black Matte finish for extra durability
Fog and Waterproof Lenses in a Shockproof body, Argon Purged housing, that is Completely Sealed with o-rings
About the Presma Company
Presma is a premium supplier for firearm scopes, optics, mounts, and other add-ons used for guns like rifles and long guns. They design and make their scopes, mounts, and related products choosing elements which are durable and long lasting. This includes the Presma 1-6×28 Precision Rifle Scope/Etched Illuminated Reticle Emerald, Multi-Coated Lenses/Fog, Waterproof, Shockproof by Presma. For more shooting products, visit their site.
What You Need to Know About Glass
Rifle scopes permit you to exactly align a rifle at various targets by lining up your eye with the target at range. They accomplish this through zoom by making use of a series of lenses within the scope. The scope’s alignment can be dialed in to take into account separate environmental factors like wind and elevation increases to account for bullet drop.
The scope’s purpose is to help the shooter understand exactly where the bullet will land based upon the sight picture you are seeing using the scope as you align the scope’s crosshair or reticle with the intended point of impact. Many modern-day rifle scopes have around 11 parts which are found internally and outside of the optic. These parts consist of the rifle scope’s body, lenses, windage dials, objective focus rings, and other elements. Learn about the eleven parts of optics.
Rifle Scope Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Opting for the best type of rifle scope is based around what type of shooting you plan on doing.
About First Focal Plane Scopes
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. These kinds of scopes are useful for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where calculations are small
- Experienced shooters who have an idea for their target “hold over” and also “lead” relationships for their firearm
- Shooters who do not mind the reticle is bigger and uses up more visual eyesight space than a SFP reticle
Info About Second Focal Plane Optics
Second focal plane optics (SFP) come with the reticle to the rear of the zoom lens. This causes the reticle to stay at the exact same size relative to the level of magnification being used. The final result is that the reticle measurements alter based upon the zoom chosen to shoot over longer distances given that the markings represent various increments which change with the magnification. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick. These kinds of glass are convenient for:
- Long distance forms of shooting where shooters have more time to make ballistic calculations
- Shooting where most of the shots occur within much shorter ranges and proximities
- Shooters who want a clearer optic picture without space taken up by the larger size FFP reticle
Zoom for Rifle Glass
The amount of zoom a scope offers is figured out by the diameter, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Single Power Lens Optics
A single power rifle optic will have a zoom number designator like 4×32. This suggests the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this kind of optic can not adjust because it is a fixed power optic.
About Variable Power Lens Optics
Variable power rifle scopes can be adjusted between magnification levels. It will list the zoom level in a configuration like 2-10×32. These numbers mean the zoom of the scope can be set in between 2x and 10x power. This always includes the powers in-between 2 and 10. The power modification is achieved using the power ring part of the scope near the rear of the scope by the eye bell.
Power and Range Correlations
Here are some recommended scope power levels and the ranges where they can be efficiently used. Keep in mind that high power glass will not be as efficient as lower magnification level scopes since too much magnification can be a negative thing in certain situations. The same concept applies to extended ranges where the shooter needs to have sufficient power to see where to properly aim the rifle.
Details on Lens Coverings
All cutting-edge rifle optic and scope lenses are layered. Lens covering can be a significant aspect of a rifle’s setup when purchasing high end rifle optics and scope systems.
HD Versus ED Scope Lens Coatings
Some glass producers also use “HD” or high-definition lense coatings that make the most of different processes, rare earth compounds, polarizations, and aspects to extract numerous colors and viewable target definition through the lens. This HD coating is often used with more costly high density lens glass which drops light’s potential to refract by means of the lens glass. Some scope suppliers use “HD” to describe “ED” indicating extra-low dispersion glass. ED handles how certain colors are represented on the chroma spectrum and the chromatic deviance or aberration which is also called color distortion or fringing. Chromatic aberration can be noticeable around things with defined outlines as light hits the item from certain angles.
Single Finish Versus Multi-Coating
Different optic lenses can likewise have various finishes used to them. All lenses normally have at least some type of treatment or finishing applied to them prior to being used in a rifle scope or optic.
Single coated lenses have a treatment applied to them which is normally a protective and improving 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 how much money you spent for it. The scope’s maker and cost are indications of the lens quality.
Some scope makers similarly make it a point to specify if their optic lenses are coated or “multi” covered. Being “better” depends on the manufacturer’s lens treatment technology and the quality of products used in building the rifle scope.
Rifle Scope Lens Anti-water Finishing
Water on a lens does not assist with preserving a clear sight picture through a scope at all. Lots of top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic covering.
Rifle Glass Installation Alternatives
Installing approaches for scopes are available in a few options. There are the basic scope rings which are separately installed to the scope and one-piece scope mounts which cradle the scope. These various types of mounts also usually can be found in quick release versions which use throw levers which allow rifle operators to quickly mount and dismount the optics.
Hex Key Rifle Glass Ring Mounts
Standard, clamp-on type mounting scope rings use hex head screws to mount to the flattop style Picatinny scope mounting rails on rifles. These forms of scope mounts use a pair of individual rings to support the optic, and are usually constructed from 7075 T6 billet aluminum or similar materials which are manufactured for far away precision shooting. This type of scope mount is good for rifle systems which need to have a resilient, unfailing mount which will not move no matter just how much the scope is moved about or jarring the rifle takes. These are the type of mounts you should have for a dedicated scope system on a long distance scouting or sniper competition rifle that will pretty much never need to be modified or recalibrated. Blue 242 Loctite threadlocker can additionally be used on the mount’s screws to protect against the hex screw threads from wiggling out after they are installed firmly in place. An example of these rings are the 30mm type from the Vortex Optics company. The set normally costs around $200 USD
Quick-Release Cantilever Rifle Scope Rings
These types of quick-release rifle scope mounts can be used to quickly take off a scope and connect it to a different rifle. Several scopes can also be swapped out if they all use a similar design mount. These types of mounts come in handy for rifles which are transferred a lot, to remove the optic from the rifle for protecting the scope, or for optics which are used between several rifles or are situationally focused.
Sealing and Gas Purging for Glass Tubes
Moisture inside your rifle optic can mess up a day of shooting and your pricey optic by causing fogging and creating residue inside of the scope tube. Most scopes avoid wetness from getting in the scope tube with a system of sealing O-rings which are waterproof.
Rifle Glass Gas Purging
Another part of avoiding the buildup of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Because this area is already occupied by the gas, the glass is less impacted by temperature changes and pressure distinctions from the outdoor environment which could possibly allow water vapor to leak in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
