Last update on August 9, 2022 // Source: Amazon API
Rifle Scope Product Details
Sniper PM4X32SB 4X Magnified Optic with Illuminated BDC Reticle – Rifle Scope
Objective Diameter: 32mm
Field of View @ 100 yards: 42″
Eye Relief: 3.1″
Exit Pupil: 16mm
Click Value @100 yards: 1/4″
Weight: 15.9 oz
Batteries: CR2032 3V include)
Rifle Scope Product Features
Crystal Clear Fully Coated Prism Lens for Excellent Light Transmission and the Best Clarity
Red & Green Illuminated BDC Reticle
Precise 1/4 MOA Click Value for Windage and Elevation Adjustment
Completely Sealed and Nitrogen Filled, Shockproof, Fogproof and Waterproof
About the Sniper Brand
Sniper is a premium maker for long gun scopes, optics, mounting solutions, and other add-ons used for firearms like rifles and long guns. They create and make their scopes, mounts, and related products by choosing building materials which are resilient and long lasting. This includes the Sniper PM4X32SB 4X Magnified Optic with Illuminated BDC Reticle – Rifle Scope by Sniper. For more shooting items, visit their site.
What You Need to Know About Glass
Rifle scopes allow you to precisely align a rifle at various targets by aligning your eye with the target at range. They do this through magnifying the target by using a series of lenses inside the scope. The scope’s alignment can be adapted for the consideration of various environmental factors like wind and elevation increases to make up 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 viewing via the optic as you align the scope’s crosshair or reticle with the intended target. A lot of modern rifle optics have about eleven parts which are located inside and on the exterior of the optic. These optic pieces include the rifle scope’s body, lenses, modification dials, focus rings, and other components. See all eleven parts of optics.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The style of focal plane a scope has decides where the reticle or crosshair lies relative to the scopes magnification. It actually suggests the reticle is situated behind or before the magnifying lens of the scope. Choosing the most reliable type of rifle glass is based upon what style of shooting or hunting you anticipate doing.
First Focal Plane Scopes
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These kinds of scopes are beneficial for:
- Quick acquisition, long distance kinds of shooting
- Shooting scenarios where computations are small
- Experienced shooters who know their target “hold over” and also “lead” equations for their long guns
- Shooters who do not mind the reticle is bigger and occupies more visual eyesight space than a SFP reticle
Info About Second Focal Plane Optics
Second focal plane optics (SFP) include the reticle to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick measurement would be 1/5th of the non “zoom” tick measurement.
- Far away kinds of shooting where shooters have increased time to make ballistic estimations
- Shooting where most shots occur within shorter ranges and distances
- Shooters who choose a clearer optic sight picture without area used up by the larger size FFP reticle
Rifle Glass Magnification
The quantity of scope magnification you require depends upon the form of shooting you like to do. Virtually every style of rifle scope delivers some degree of zoom. The amount of magnification a scope offers is identified by the size, thickness, and curves of the lenses 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 element of what can generally be seen by human eyes.
Single Power Lens Rifle Optic Details
A single power rifle optic or scope uses a zoom number designator like 4×32. This means the magnification power of the scope is 4x power and the objective lens is 32mm. The zoom of this kind of scope can not change considering that it is a set power scope.
Info About Adjustable Power Lens Glass
Variable power rifle scopes can be changed between magnification power levels. It will note the zoom amount in a configuration such as 2-10×32. These numbers suggest the magnification of the scope could be set in between 2x and 10x power. This always includes the power levels in-between 2 and 10. The power shift is achieved using the power ring component of the scope near the rear of the scope by the eye bell piece.
Power and Range
Here are some suggested scope power levels and the distances where they may be effectively used. High power glass will not be as effective as lower magnification glass given that too much zoom can be a negative aspect depending on your shooting distance. The exact same idea goes for longer ranges where the shooter needs sufficient power to see exactly where to properly aim the rifle at the target.
Rifle Scope Lens Covering
All modern rifle optic and scope lenses are covered. Lens finishing can be a significant element of a shooting system when thinking about high end rifle optics and scope setups.
About Lens Coatings – HD Versus ED
Some optic suppliers additionally use “HD” or high-def glass finishes that take advantage of various processes, aspects, polarizations, and chemicals to enhance a wide range of color ranges and viewable definition through the lens. This HD finish is frequently used with more costly, high density glass which decreases light’s chance to refract through the lens glass. Some scope vendors use “HD” to refer to “ED” implying extra-low dispersion glass. ED deals with how certain colors are presented on the chromatic spectrum and the chromatic aberration or difference which is similarly called color distortion or fringing. Chromatic aberration is often visible around things with hard edges and shapes as light hits the item from various angles.
Single Covering Versus Multi-Coating
Different scope lenses can also have various finishings applied to them. All lenses usually have at least some type of treatment or finishing applied to them before they are used in a rifle scope or optic assembly. Because the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It is part of the carefully tuned optic. It needs to have a finish applied to it so that it will be optimally functional in lots of types of environments, degrees of sunlight (full light VS shaded), and other shooting conditions.
This lens treatment can offer protection to the lens from scratches while minimizing glare and other less beneficial things experienced in the shooting environment while sighting in with the scope. The quality of a single coated 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 means the lens has had several treatments applied to the surfaces. If a lens gets multiple treatments, it can indicate that a company is taking multiple steps to fight different environmental elements like an anti-glare finish, a scratch resistant anti-abrasion coating, followed by a hydrophilic covering. This also does not always indicate the multi-coated lens is better than a single coated lens. Being “much better” hinges on the maker’s lens treatment technology and the quality of products used in constructing the rifle scope.
About Anti-water Finishing
Water on a scope lens doesn’t improve keeping a clear sight picture through an optic at all. Lots of top of the line and high-end scope manufacturers 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 area of the Steiner scope lens so the water particles can not bind to it or create surface tension. The result is that the water beads sheet off of the scope to preserve a clear, water free sight picture.
Rifle Glass Installing Choices
Mounting approaches for scopes come in a couple of options. There are the basic scope rings which are separately mounted to the optic and one-piece mounts which cradle the scope. These different types of mounts also typically are made in quick release variations which use throw levers which permit rifle shooters to rapidly mount and remove the scopes.
Rifle Glass Mounts with Hex Key Rings
Normal, clamp design mounting scope rings use hex head screws to mount to the flattop style Picatinny scope installation rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are made from 7075 T6 billet aluminum which are designed for long distance accuracy shooting. This type of scope install is great for rifles which need a long lasting, sound mounting solution which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Rifle Scope Ring Mounts
These kinds of quick-release rifle scope mounts can be used to rapidly take off 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 switched out on the range. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers connect firmly 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 accuracy. These kinds of mounts come in handy for shooting platforms which are transported a lot, to remove the optic from the rifle for protection, or for sight systems which are adopted between multiple rifles. An example of this mount style is the 30mm mount designed by the Vortex Optics brand. It generally costs around $250 USD
Scope Tube Sealing and Gas Purging
Moisture inside your rifle scope can ruin a day on the range and your expensive optic by triggering fogging and generating residue within the scope’s tube. The majority of optics prevent wetness from getting in the scope tube with a series of sealing O-rings which are water resistant. Normally, these optics can be submerged underneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be plenty of wetness avoidance for conventional use rifles, unless you plan on taking your rifle aboard a watercraft and are worried about the scope still working if it is submerged in water and you can still recover the gun.
Rifle Scope Gas Purging
Another part of preventing the accumulation of wetness within the rifle scope’s tube is filling the tube with a gas like nitrogen. Since this area is already taken up by the gas, the optic is less affected by condition shifts and pressure variations from the outdoor 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 good rifle scope to seek out.