Description
Rifle Scope Product Details
Persei 2-7×42 Long Eye Relief Scope Red Green llluminate Mil-dot/Rangefinder Reticle 30mm Tube Diameter Fits Mosin Nagant 1891/30 M39 with Mount Rings
Product specification:
MAGNIFICATION2X-7X
OBJECTIVE DIAMETER42mm
TUBE DIAMETER30mm
EYE RELIEF8.5″-10.5″
EXIT PUPIL21-6MM
Click Value W/E:1/4
FOV(FEET@100YDS)14-4.6
LENGTH11.25″
Weight: 14 oz.
1 x 2-7X42 Scout scope sight
1 x Cleaning Cloth
1 x pair scope rings
1 x SEE-THRU Protective Scope Rings
Battery Type:1 x CR2032 battery (Not included)
Material: Aircraft Grade Aluminum Alloy
Color: Anodized matte black.
Rifle Scope Product Features
Tactical rifle scope providing crystal clear targeting at 2X-7X magnification, with a 42mm objective diameter and an eye relief of 8.5 – 10.5 Inches.
Long eye relief 2-7×42 Hunting rifle scope fits Mosin Nagant 1891/30 M39 with Red Green llluminate Mil-dot/Rangefinder Reticle with Weaver/Picatinny ring mounts.
Fully anodized matte black,superior aircraft grade aluminium body made from one piece,Excel durability and performance with high quality military grade precision.
Multi-coated lens with improved refractive and crystal clear view,filled with nitrogen,provide water-proof,fog-proof,dust-proof,scratch-resistant.
All weather adapted and optimal rifle scope for hunting,held zero for thousands of rounds.
About the Persei Scope Maker
Persei is a premium maker for weapon scopes, optics, mounting solutions, and other components used for firearms like rifles and long guns. They innovate and build their mounts and related products choosing materials which are durable and long lasting. This includes the Persei 2-7×42 Long Eye Relief Scope Red Green llluminate Mil-dot/Rangefinder Reticle 30mm Tube Diameter Fits Mosin Nagant 1891/30 M39 with Mount Rings by Persei. For additional shooting goods, visit their site.
Facts About Optics
Rifle scopes allow you to precisely aim a rifle at various targets by aligning your eye with the target at range. They do this through zoom using a series of lenses inside the scope. The scope’s positioning can be adjusted for consideration of varied environmental aspects like wind speed and elevation increases 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 viewing through the optic as you align the scope’s crosshair or reticle with the intended target. Many modern-day rifle scopes and optics have about eleven parts which are arranged internally and on the exterior of the optic. These optic pieces consist of the rifle scope’s body, lenses, modification turrets, objective focus rings, and other components. See all eleven parts of a rifle scope.
Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding upon the perfect type of rifle glass is based around what type of shooting you plan to do.
First Focal Plane Scope Facts
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These styles of scopes are helpful for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where calculations are very little
- Experienced shooters who know their target “hold over” and “lead” equations for their firearms
- Shooters who don’t mind the reticle is enlarged and requires more visual eyesight space than a SFP reticle
Second Focal Plane Glass
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” 100 yard tick would be 1/5th of the non “zoom” tick.
- Long distance forms of shooting where shooters have additional time to make ballistic calculations
- Shooting where most of the shots occur within much shorter distances and ranges
- Shooters who prefer a clearer optic picture with less room taken up by the bigger FFP reticle
About Scope Zoom
The quantity of zoom a scope provides is figured out by the size, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Single Power Lens Optics
A single power rifle scope or optic comes with a zoom number designator like 4×32. This indicates the zoom 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 optic.
Info About Variable Power Lens Rifle Scopes
Variable power rifle scopes have adjustable power. It will list the zoom level in a format like 2-10×32. These numbers suggest the zoom of the scope can be changed in between 2x and 10x power. This always includes the power levels in-between 2 and 10. The power adaptation is achieved by employing the power ring component of the scope near the rear of the scope by the eye bell.
Power Levels and Range Correlations
Here are some suggested scope power levels and the ranges where they could be efficiently used. Highly magnified rifle scope glass will not be as effective as lower powered rifle scope glass considering too much magnification can be a bad thing. The very same idea goes for extended ranges where the shooter needs sufficient power to see where to best aim the rifle at the target.
Lens Coating for Glass
All modern rifle scope lenses are layered. There are various types and qualities of glass coverings. Lens covering is an important element of a rifle’s setup when looking at luxury rifle optics and targeting units. The lenses are among the most critical components of the scope because 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 exterior and even helps with anti glare capabilities from excess direct sunlight and color profiles.
ED Versus HD Optics
Some scope producers also use “HD” or high-definition lens coatings which use different techniques, polarizations, chemicals, and aspects to draw out a wide range of colors and viewable quality through the lens. Some scope manufacturers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Finishing Versus Multi-Coating for Rifle Optics
Various optic lenses can likewise have various coverings used to them. All lenses generally 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 helpful things experienced in the shooting environment while sighting in with the scope. The quality of a single coated lens depends on the scope manufacturer and how much you paid for it.
Some scope producers also make it a point to define if their optic lenses are layered or “multi” coated. Being “better” depends on the manufacturer’s lens treatment innovation and the quality of materials used in developing the rifle scope.
Hydrophobic Rifle Scope Lens Finish
Water on a scope lens doesn’t help with keeping a clear sight picture through a scope whatsoever. Lots of top of the line or premium optic manufacturers will coat their lenses with a hydrophilic or hydrophobic finishing. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It deals with the surface area of the Steiner scope lens so the water molecules can not bind to it or develop surface tension. The result is that the water beads roll off of the scope to keep a clear, water free sight picture.
Options for Installing Rifle Glass on Firearms
Installing solutions for scopes come in a few options. There are the basic scope rings which are separately installed to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also typically are made in quick release versions which use manual levers which enable rifle shooters to rapidly mount and remove the optics.
Hex Key Rifle Scope Ring Mounting Solutions
Normal, clamp style mounting scope rings use hex head screws to mount to the flattop style Picatinny scope mount rails on rifles. These types of scope mounts use two different rings to support the optic, and are often made from 7075 T6 billet aluminum which is created for long distance accuracy shooting. This type of scope mount is wonderful for rifles which require a long lasting, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Optic Mounting Solutions with Quick-Release Cantilever Rings
These kinds of quick-release rifle scope mounts can be used to quickly attach and detach a scope from a rifle. If they all use a comparable style mount, multiple scopes can often be switched out in the field. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers fasten solidly 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 keeping the original sighting settings. These kinds of mounts come in practical for shooting platforms which are moved a lot, to take off the glass from the rifle for protection, or for optics which are employed between a number of rifles. An example of this mount style is the 30mm mount designed by Vortex Optics. It generally costs around $250 USD
About Rifle Scope Tube Sealing and Gas Purging
Moisture inside your rifle glass can ruin a day of shooting and your highly-priced optic by resulting in fogging and generating residue inside of the scope’s tube. A lot of optics prevent wetness from entering the scope tube with a system of sealing O-rings which are waterproof. Usually, these water-resistant optics can be immersed underneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be sufficient moisture prevention for standard use rifles for hunting and sporting purposes, unless you anticipate taking your rifle aboard a watercraft and are concerned about the optic still working if it is submerged in water and you can still find the firearm.
Rifle Optic Gas Purging
Another part of preventing the accumulation of wetness inside of the rifle optic tube is filling the tube with a gas like nitrogen. Considering that this area is already occupied by the gas, the scope is less affected by temperature changes and pressure variations from the outside environment which might potentially enable water vapor to permeate in around the seals to fill the void which would otherwise be there. These are good qualities of a decent rifle scope to look for.
