Description
Rifle Scope Product Details
PRESMA Eagle Series 6-24x50mm AO Precision Rifle Scope
Get precise shooting from a more agile scope. – Measures only 13.8″ in length to be more agile and lighter than other scopes; Fully multi-coated lenses with advantage solution for maximum light transmission; Red, Green, and Blue illuminated Round X range estimating reticle with 11 levels of intensity; Illumination adjustment memorizes last level of selection; 1″ aircraft-grade aluminum tube with scratch-resistant hard-coat anodized black-matte finish; Built on a strong cardan-joint platform to handle demanding use; Nitrogen-filled and sealed; 100% waterproof, fogproof, shockproof; Zero locking windage and elevation adjustments; Includes 3″ sunshade and flip open lens covers; Limited lifetime manufacturer’s warranty; Magnification: 6 – 24x; Diopter Range: -2.75 / 2.25; FOV: 4-1 deg; Exit Pupil: 8.3 – 2.1mm; Eye Relief: 3.4″ – 3.75″; Adjustment: 1/8 M.O.A.; Adj Range: 25; Length: 13.8″; Weight: 23 oz.; Finish: Matte; Focal Plane: 2nd; Waterproof: Yes; Fogproof: Yes; Shockproof: Yes; Warranty: Limited Lifetime Manufacturer’s; Mfg. Number: PREA031.
Rifle Scope Product Features
Aircraft aluminum construction, one-piece tube built with hard anodized, black matte finish, Scratch resistant
Fully multi-coated optics Fast Focus Eyepiece/Eyeball well suited for wide range shooting, with high optical clarity at 6-24 times magnification and a 50mm objective diameter. Allow for quick acquisition of close quarter and fast moving targets
11 level RGB tri-illuminated, RXR reticle, Waterproof & Fogproof and Shockproof
Level bubble, electronic button switch, flip up lens cover, front AOL
Dimension: 2.3*2.3*14.5″; 23.8 oz and LIFETIME WARRANTY
About the Presma Brand
Presma is a premium supplier for weapon scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They innovate and make their scopes and related products working with materials which are long lasting and durable. This includes the PRESMA Eagle Series 6-24x50mm AO Precision Rifle Scope by Presma. For more shooting goods, visit their website.
Optic Details
Rifle scopes allow you to specifically aim a rifle at various targets by lining up your eye with the target at range. They do this through zoom by making use of a set of lenses inside the scope. The scope’s positioning can be adapted to take into account different ecological elements like wind speed and elevation increases to make up for bullet drop.
The scope’s function is to help the shooter understand precisely where the bullet will hit based upon the sight picture you are viewing via the optic as you align the scope’s crosshair or reticle with the intended target. Most contemporary rifle scopes and optics have about eleven parts which are arranged inside and externally on the scope body. These parts include the rifle scope’s body, lenses, adjustment turrets or dials, objective focus rings, and other parts. See all eleven parts of scopes.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The sort of focal plane an optic has establishes where the reticle or crosshair is located in relation to the scopes zoom. It literally suggests the reticle is located behind or before the magnification lens of the optic. Considering the most suitable style of rifle glass depends on what sort of hunting or shooting you plan on doing.
First Focal Plane Glass Details
Focal plane scopes (FFP) feature the reticle in front of the magnifying lens. This induces 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 range as they are at the non magnified range. For example, one tick on a mil-dot reticle at 100 yards with no “zoom” is still the corresponding tick at 100 yards using 5x “zoom”. These types of scopes work for:
- Quick acquisition, long distance types of shooting
- Shooting circumstances where calculations are small
- Experienced shooters who have an idea for their aim point “hold over” plus “lead” equations for their long guns
- Shooters who don’t mind the reticle is enlarged and takes up more visual eyesight room than a SFP reticle
Second Focal Plane Scopes
Second focal plane optics (SFP) feature the reticle to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick would be 1/5th of the non “zoom” tick measurement.
- Long distance styles of shooting where shooters have more time to make ballistic computations
- Shooting where most shots take place within much shorter ranges and distances
- Shooters who like a clearer optic sight picture with less area taken up by the bigger FFP reticle
Ins and Outs of Scope Zoom
The amount of zoom a scope provides is identified by the diameter, thickness, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Single Power Lens Rifle Glass Info
A single power rifle scope will have a zoom number designator like 4×32. This implies the zoom power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of scope can not change given that it is set from the factory.
Variable Power Lens Scope Facts
Variable power rifle scopes use variable power levels. The power change is handled by using the power ring part of the scope near the rear of the scope by the eye bell.
Power Levels and Range
Here are some advised scope power settings and the ranges where they could be successfully used. Highly magnified rifle scope glass will not be as effective as lower powered glass since too much zoom can be a bad thing. The same relates to longer ranges where the shooter needs to have sufficient power to see precisely where to best aim the rifle.
Details on Rifle Scope Lens Coating
All modern-day rifle optic and scope lenses are layered. Lens covering can be a crucial aspect of a shooting platform when considering high end rifle optics and scope setups.
HD Versus ED Lenses
Some scope producers even use “HD” or high-def lense finishes which use different processes, components, polarizations, and chemical applications to draw out numerous color ranges and viewable target visibility through lenses. This high-definition finish is commonly used with greater density glass which drops light’s opportunity to refract through the lens glass. Some scope vendors use “HD” to refer to “ED” suggesting extra-low dispersion glass. ED deals with how certain colors are presented on the chromatic spectrum and the chromatic aberration or deviance which is similarly called color distortion or fringing. Chromatic aberration can be obvious over things with hard edges and shapes as light hits the object from various angles.
About Single Finish Versus Multi-Coating
Different optic lenses can likewise have different coatings used to them. All lenses usually have at least some type of treatment or coating applied to them prior to being used in a rifle scope or optic.
Single coated lenses have a treatment applied to them which is generally a protective and enhancing multi-purpose treatment. This lens treatment can protect the lens from scratches while lowering glare and other less useful 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 money you spent on it. Both the make and cost are indicators of the lens quality.
Some scope makers also make it a point to specify if their optic lenses are covered or “multi” covered. This means the lens has had numerous treatments applied to the surfaces of the glass. If a lens gets multiple treatments, it can prove that a producer is taking several steps to combat various natural factors like an anti-glare finish, a scratch resistant anti-abrasion coating, followed by a hydrophilic covering. This also doesn’t necessarily indicate the multi-coated lens is much better than a single layered lens. Being “much better” hinges on the manufacturer’s lens treatment technology and the quality of materials used in developing the rifle optic.
Hydrophobic Lens Coverings
Water on a scope’s lens doesn’t improve retaining a clear sight picture through an optic in any way. Numerous top of the line or premium optic makers will coat their lenses with a hydrophobic or hydrophilic coating. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It treats the surface of the Steiner scope lens so the water particles can not bind to it or produce surface tension. The result is that the water beads roll off of the scope to preserve a clear, water free sight picture.
Optic Installing Options
Mounting solutions for scopes are available in a couple of options. There are the standard scope rings which are separately mounted to the scope and one-piece scope mounts which cradle the scope. These various types of mounts also typically are made in quick release variations which use throw levers which enable rifle shooters to quickly mount and dismount the optics.
Hex Key Scope 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 two separate rings to support the optic, and are often made from 7075 T6 billet aluminum which is created for long range precision shooting. This type of scope install is wonderful for rifles which require a resilient, sound mount which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Rifle Glass Ring Mounts
These kinds of quick-release rifle scope mounts can be used to rapidly remove a scope from a rifle and reattach it to a different rifle. If they all use a comparable style mount, multiple scopes can often be swapped on the range. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers attach solidly to a flat top type Picatinny rail. This lets the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while keeping precision. These kinds of mounts come in practical for shooting platforms which are transferred a lot, to take off the scope glass from the rifle for protection, or for sight systems which are adopted in between a number of rifles. An example of this mount type is the 30mm mount designed by Vortex Optics. It generally costs around $250 USD
Info Around Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle scope can mess up a day of shooting and your highly-priced optic by triggering fogging and generating residue within the scope’s tube. The majority of scopes protect against wetness from going into the optical tube with a series of sealing O-rings which are water resistant. Typically, these scopes can be submerged within 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be plenty of moisture content avoidance for basic use rifles, unless you plan on taking your rifle on your motorboat and are worried about the optic still working if it falls overboard and you can still recover the gun.
Gas Purged Rifle Glass Tubes
Another part of preventing the accumulation of wetness within the rifle optic’s tube is filling the tube with a gas like nitrogen. Considering that this area is currently taken up by the gas, the scope is less influenced by temperature level alterations and pressure distinctions from the outside environment which might potentially allow water vapor to permeate in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to look for.
