Last update on February 7, 2023 // Source: Amazon API
Rifle Scope Product Details
Sniper MG4X20 Mosin Nagant 91/30 Scope Svt-40 Steel Mount Steel Tube
RETICLE: ww II Syle
TUBE SIZE: 36.5MM
EYE RELIEF: 2.64
EXIT PUPIL/MM: 5
FIELD OF VIEW@100YARDS: 33.3
CLICK IN@100YARDS: 0.75
ADJUSTMENT RANGE: 30
Fog PROOF: YES
Shock PROOF: YES
Water PROOF: YES
Scope body and mount are made with High Strength Steel.
Rifle Scope Product Features
This set includes Scope, Leather lens covers, Drill, Tap, Screw.
Copied exactly from a genuine WWII Russian Mosin Nagant 91/30 scope
High Quality Reproduction with new design of optics system that has wide angle and long eye relief.
New design of side focus for long distance. Diopter ring for users with different visions.
Nitrogen purged scope body, completely sealed with o-ring, rendering scope Waterproof, and fog proof
About the Sniper Brand
Sniper is a premium manufacturer for firearm scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They create and manufacture their mounts and related products making the most of elements which are long lasting and resilient. This includes the Sniper MG4X20 Mosin Nagant 91/30 Scope Svt-40 Steel Mount Steel Tube by Sniper. For additional shooting products, visit their website.
Rifle scopes permit you to precisely align a rifle at different targets by aligning your eye with the target at range. They accomplish this through magnifying the target by using a set of lenses inside the scope. The scope’s positioning can be dialed in for consideration of different environmental factors like wind speed and elevation decreases to account for bullet drop.
The scope’s purpose 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 target. Most modern rifle optics have around eleven parts which are found within and on the exterior of the optic. These scope parts consist of the rifle scope’s body, lenses, adjustment dials or turrets, focus rings, and other components. See all eleven parts of a rifle optical system.
Rifle Optic Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The kind of focal plane a scope has establishes where the reticle or crosshair lies in connection with the scopes zoom. It literally indicates the reticle is situated behind or in front of the magnification lens of the optic. Deciding upon the very best type of rifle glass depends on what kind of shooting or hunting you anticipate undertaking.
About First Focal Plane Scopes
Focal plane scopes (FFP) come with the reticle in front of the magnification lens. This induces the reticle to increase in size based on the level of magnification being used. The benefit is that the reticle measurements are the same at the magnified distance as they are at the non magnified range. One tick on a mil-dot reticle at 100 yards with no “zoom” is still the same tick at 100 yards by using 5x “zoom”. These types of scopes are practical for:
- Quick acquisition, far away types of shooting
- Shooting scenarios where computations are small
- Experienced shooters who have an idea for their target “hold over” and also “lead” relationships for their firearms
- Shooters who do not mind the reticle is bigger and occupies more visual eyesight space than a SFP reticle
Second Focal Plane Optics
Second focal plane scopes (SFP) include the reticle to the rear of the zoom 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 reticle measurement.
- Far away types of shooting where shooters have increased time to make ballistic calculations
- Shooting where most of the shots take place within shorter spaces and ranges
- Shooters who would like a clearer optic sight picture with less area taken up by the bigger FFP reticle
About Scope Magnification
The quantity of zoom a scope offers is determined by the size, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Power Lens Scopes
A single power rifle scope and optic comes with a magnification number designator like 4×32. This implies the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this type of scope can not change since it is set from the factory.
Variable Power Lens Rifle Scopes
Variable power rifle scopes use variable power levels. The power adjustment is achieved by the power ring part of the scope near the back of the scope by the eye bell.
The Power Level and Range of Rifle Glass
Here are some suggested scope power settings and the distances where they may be successfully used. Remember that high power scopes and optics will not be as effective as lower powered scopes because too much zoom can be a negative thing in certain situations. The same applies to longer ranges where the shooter needs to have increased power to see exactly where to best aim the rifle at the target.
Rifle Scope Lens Finish
All contemporary rifle glass lenses are coated. Lens coating is a significant aspect of a shooting platform when looking into high end rifle optics and scope equipment.
HD Versus ED Lens Coatings
Some optic suppliers even use “HD” or high-definition lense coatings that apply different processes, chemicals, aspects, and polarizations to extract a wide range of colors and viewable target visibility through the lens. This HD finishing is typically used with increased density glass which decreases light’s ability to refract by means of the lens glass. Some scope suppliers use “HD” to describe “ED” signifying extra-low dispersion glass. ED handles how colors are represented on the chromatic spectrum and the chromatic aberration which is similarly called color distortion or fringing. Chromatic aberration can be obvious over items with hard edges and shapes as light hits the item from specific angles.
Rifle Glass Lens Single Covering Versus Multi-Coating
Various optic lenses can also have different finishes used to them. All lenses typically have at least some type of treatment or finishing used to them before they are used in a rifle scope or optic.
This lens treatment can protect the lens from scratches while lowering glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope makers likewise make it a point to define if their optic lenses are layered or “multi” coated. This indicates the lens has had multiple treatments applied to the surfaces of the glass. If a lens receives multiple treatments, it can indicate that a producer is taking numerous steps to fight different natural elements like an anti-glare finish, a scratch resistant anti-abrasion finishing, followed by a hydrophilic finishing. This additionally does not always suggest the multi-coated lens will perform better than a single covered lens. Being “better” hinges on the maker’s lens treatment innovation and the quality of glass used in creating the rifle optic.
Anti-water Lens Finishing
Water on a lens does not assist 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 hydrophobic or hydrophilic coating.
Choices for Mounting Rifle Glass on Firearms
Installing solutions for scopes are available in a few choices. There are the standard scope rings which are separately mounted to the optic and one-piece scope mounts which cradle the scope. These various types of mounts also usually are made in quick release variations which use throw levers which allow rifle operators to quickly install and dismount the scope.
Hex Key Scope Ring Mounts
Standard, clamp type mounting optic rings use hex head screws to mount to the flattop style Picatinny scope mount rails on the tops of rifles. These forms of scope mounts use double independent rings to support the optic, and are usually constructed from 7075 T6 billet aluminum which are made for far away accuracy shooting. This form of scope mount is great for rifle systems which require a durable, unfailing mount which will not change regardless of how much the scope is moved or abuse the rifle takes. These are the type of mounts you should have for a dedicated optics system on a reach out and touch someone scouting or interdiction rifle which will hardly ever need to be altered or recalibrated. Blue 242 Loctite threadlocker can also be used on the scope mount’s screws to keep the hex screws from wiggling out after they are installed firmly in place. An example of these mounting rings are the 30mm style from the Vortex Optics company. The set usually costs around $200 USD
Quick-Release Cantilever Rifle Scope Rings
These kinds of quick-release rifle scope mounts can be used to rapidly connect and remove a scope from a rifle. A wide range of scopes can also be switched out if they all use a similar designed mount. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect tightly to a flat top style Picatinny rail. This enables the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while preserving precision. These kinds of mounts are useful and practical for rifles which are hauled around a lot, to remove the scope glass from the rifle for protection, or for scopes which are chosen for use in between multiple rifles. An example of this mount type is the 30mm mount designed by Vortex Optics. It normally costs around $250 USD
Info on Optic Tube Sealing and Gas Purging
Moisture inside your rifle optic can mess up a day of shooting and your expensive optic by bringing about fogging and producing residue inside of the scope tube. The majority of scopes avoid wetness from entering the scope tube with a system of sealing O-rings which are waterproof.
Gas Purged Glass Tubes
Another component of avoiding the buildup of moisture within the rifle optic tube is filling the tube with a gas like nitrogen. Given that this area is currently taken up by the gas, the scope is less affected by climate changes and pressure differences from the outdoor environment which could possibly enable water vapor to leak 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.