Last update on February 5, 2023 // Source: Amazon API
Rifle Scope Product Details
SPINA OPTICS Tactical Optical Sight 3×32 Gp01 Fiber Prism Red Illuminated Sight Riflescope for Hunting
Magnification: 3X Reticle: Ballistic CQ Finish: Matte Click value (MOA): .33 inch Max adjustment(MOA): 60 inches Exit pupil distance: >=80mm ExIt pupil diameter: 8.4+0.5mm Field of view:>=6 degree Objective lens diameter: 32 mm Eye piece diameter: 29 mm
Rifle Scope Product Features
Magnification: 3X Reticle: Ballistic CQ Finish: Matte
Click value (MOA): .33 inch Max adjustment(MOA): 60 inches Exit pupil distance: >=80mm
ExIt pupil diameter: 8.4+0.5mm Field of view:>=6 degree
Objective lens diameter: 32 mm Eye piece diameter: 29 mm
Features: Rugged and compact Waterproof
About the SPINA OPTICS Brand
SPINA OPTICS is a premium supplier for long gun scopes, optics, mounts, and other add-ons used for guns like rifles and long guns. They design and build their mounts and related products making the most of elements which are long lasting and resilient. This includes the SPINA OPTICS Tactical Optical Sight 3×32 Gp01 Fiber Prism Red Illuminated Sight Riflescope for Hunting by SPINA OPTICS. For additional shooting items, visit their site.
Rifle scopes allow you to specifically aim a rifle at different targets by aligning your eye with the target over a range. They accomplish this through magnifying the target by utilizing a series of lenses inside the scope. The scope’s positioning can be dialed in for consideration of numerous environmental factors like wind speed and elevation to make up for bullet drop.
The scope’s function is to help shooters understand exactly where the bullet will land based upon the sight picture you are seeing via the scope as you line up the scope’s crosshair or reticle with the intended point of impact. Many modern-day rifle scopes have about 11 parts which are arranged inside and outside of the optic. These optic pieces include the rifle scope’s body, lenses, adjustment dials or turrets, focus rings, and other elements. Learn about the eleven parts of rifle optics.
Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding on the perfect type of rifle scope depends on what type of shooting you plan on doing.
Info on First Focal Plane Glass
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. These types of scopes are useful for:
- Quick acquisition, long distance types of shooting
- Shooting circumstances where calculations are marginal
- Experienced shooters who understand their target “hold over” plus “lead” relationships for their firearm
- Shooters who don’t mind the reticle is enlarged and uses up more visual eyesight area than a SFP reticle
Second Focal Plane Optics
Second focal plane optics (SFP) include the reticle behind the magnification 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.
- Long distance styles of shooting where shooters have increased time to make ballistic computations
- Shooting where most shots take place within shorter distances and ranges
- Shooters who select a clearer optic sight picture without room taken up by the bigger FFP reticle
Rifle Scope Magnification
The measure of scope zoom you need on your glass is based on the kind of shooting you want to do. Virtually every type of rifle glass supplies some degree of magnification. The amount of magnification a scope delivers is determined by the diameter, thickness, and curvatures of the lens glass within the rifle scope. The zoom of the scope is the “power” of the glass. This signifies what the shooter is looking at through the scope is magnified times the power element of what can normally be seen by human eyes.
Fixed Single Power Lens Rifle Scope Info
A single power rifle scope and optic will have a magnification number designator like 4×32. This suggests 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 set power scope.
Adjustable Power Lens Glass
Variable power rifle scopes can be tweaked between magnified settings. The power modification is performed using the power ring part of the scope near the back of the scope by the eye bell.
The Power and Range of Scopes
Here are some suggested scope power levels and the ranges where they could be efficiently used. High power optics will not be as beneficial as lower powered glass since too much zoom can be a negative aspect depending on your shooting distance. The same concept relates to extended distances where the shooter needs sufficient power to see exactly where to best aim the rifle.
Rifle Glass Lens Finish
All state-of-the-art rifle scope lenses are covered. Lens covering can be a vital element of a shooting platform when considering high end rifle optics and scope equipment.
HD Versus ED Scope Lens Coatings
Some optic suppliers also use “HD” or high-definition glass coverings that apply various procedures, components, polarizations, and chemical applications to draw out different color ranges and viewable target definition through the lens. This high-definition covering is commonly used with more costly high density glass which lowers light’s ability to refract by means of the lens glass. Some scope suppliers use “HD” to describe “ED” indicating extra-low dispersion glass. ED handles how colors are represented on the chromatic spectrum and the chromatic aberration or difference which is similarly called color distortion or fringing. Chromatic aberration can be obvious over things with well defined outlines as light hits the item from particular angles.
Details on Single Finish Versus Multi-Coating
Various optic lenses can even have different coverings applied to them. All lenses generally have at least some type of treatment or covering applied to them prior to being used in a rifle scope or optic. Because the lens isn’t simply a raw piece of glass, they require performance enhancing coatings. It is part of the finely tuned optic. It must have a covering put on it so that it will be optimally functional in many kinds of environments, degrees of light (full light VS shade), and other shooting conditions.
This lens treatment can offer protection to the lens from scratches while decreasing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends on the scope producer and how much you paid for it.
Some scope producers likewise make it a point to specify if their optic lenses are coated or “multi” coated. This indicates the lens has multiple treatments applied to the surfaces. If a lens gets several treatments, it can show that a manufacturer is taking several actions to fight different natural elements like an anti-glare finish, a scratch resistant anti-abrasion finish, followed by a hydrophilic coating. This additionally doesn’t always imply the multi-coated lens is much better than a single covered lens. Being “better” is dependent on the maker’s lens treatment techniques and the quality of glass used in constructing the rifle glass.
Hydrophobic Lens Finishing
Water on a lens doesn’t assist with maintaining a clear sight picture through a scope at all. Numerous top of the line and high-end scope companies will coat their lenses with a hydrophobic or hydrophilic finish.
Rifle Optic Mounting Options
Mounting approaches for scopes are available in a few options. 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 generally can be found in quick release variations which use throw levers which enable rifle shooters to quickly mount and remove the glass.
Hex Key Scope Rings
Standard, clamp style mounting scope rings use hex head screws to mount to the flattop design Picatinny scope installation 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 are developed for long range accuracy shooting. This type of scope mount is fine for rifles which need a resilient, rock solid mount which will not move no matter how much the scope is moved or abused.
Glass Mounting Solutions with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to quickly attach and take off a scope from a rifle before reattaching it to a different rifle. Several scopes can also be switched out if they all use a similar style mount. These types of mounts are handy for rifle platforms which are carried a lot, to remove the optic from the rifle for protecting the scope, or for scopes which are used between multiple rifles or are situationally focused.
Sealing and Gas Purging for Scope Tubes
Wetness inside your rifle glass can wreck a day on the range and your costly optic by triggering fogging and making residue within the scope’s tube. Many scopes prevent humidity from getting in the scope tube with a system of sealing O-rings which are waterproof. Typically, these scopes can be submerged beneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be plenty of wetness avoidance for basic use rifles for hunting and sporting purposes, unless you intend on taking your rifle on boats and are worried about the optic still performing if it falls overboard and you can still rescue the firearm.
Gas Purged Glass Tubes
Another element of avoiding the accumulation of wetness inside of the rifle optic’s tube is filling the tube with a gas like nitrogen. Considering that this space is already occupied by the gas, the optic is less impacted by condition shifts and pressure differences from the external environment which may possibly allow water vapor to permeate in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.