Description
Rifle Scope Product Details
Osprey Global Standard Silver 3-9×40 Silver Mil-Dot reticle Rifle Scope
This Osprey traditional hunting scope insures quick and clear acquisition of your target. Same great scope as our SD 3-9×40 MD, but in a silver finish.
Rifle Scope Product Features
Magnification 3-9 , Objective 40mm
Reticle image plane (magnifying): sniper
Eye relief (inches): 5.51-3.14 inch
Dust Covers included
About the Osprey Global Scope Maker
Osprey Global is a premium company for long gun scopes, optics, mounts, and other components used for guns like rifles and long guns. They style and manufacture their scopes and related products by using building materials which are long lasting and resilient. This includes the Osprey Global Standard Silver 3-9×40 Silver Mil-Dot reticle Rifle Scope by Osprey Global. For additional shooting items, visit their site.
Info Rifle Scopes
Rifle scopes enable you to exactly align a rifle at different targets by aligning your eye with the target over a range. They do this through magnification by employing a set of lenses within the scope. The scope’s positioning can be adjusted to account for separate ecological aspects like wind speed and elevation increases or decreases to account for bullet drop.
The scope’s purpose is to understand exactly where the bullet will land based upon the sight picture you are viewing through the optic as you align the scope’s crosshair or reticle with the target. A lot of contemporary rifle scopes have about 11 parts which are found inside and externally on the optic. These optic pieces include the rifle scope’s body, lenses, windage and elevation dials or turrets, focus rings, and other elements. Learn about the eleven parts of rifle optics.
The Types of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Deciding on the finest type of rifle scope is based around what type of shooting you plan on doing.
First Focal Plane Glass Info
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These styles of scopes are useful for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where estimations are minor
- Experienced shooters who understand their aim point “hold over” and “lead” ratios for their rifles
- Shooters who do not mind the reticle is enlarged and occupies more visual eyesight area than a SFP reticle
About Second Focal Plane Optics
Second focal plane glass (SFP) include the reticle to the rear of the zoom lens. This causes the reticle to remain at the very same scale relative to the volume of zoom being used. The effect is that the reticle measurements alter based upon the magnification applied to shoot over greater ranges since the reticle measurements present various increments which differ with the magnification. In the FFP illustration with the SFP glass, the 5x “zoom” one hundred yard tick would be 1/5th of the non “zoom” tick measurement. These varieties of optics work for:
- Long distance styles of shooting where shooters have additional time to make ballistic computations
- Shooting where most of the shots happen within much shorter ranges and distances
- Shooters who would like a clearer optic picture without room used up by the larger size FFP reticle
Magnification for Scopes
The amount of zoom a scope provides is figured out by the diameter, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Fixed Single Power Lens Glass
A single power rifle optic uses a zoom number designator like 4×32. This indicates the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of scope can not adjust given that it is a set power scope.
Variable Power Lens Scope Info
Variable power rifle scopes can be tweaked between magnified settings. The power change is accomplished by using the power ring part 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 may be effectively used. High power optics will not be as useful as lower magnification optics due to the fact that too much magnification can be a negative aspect depending on your shooting distance. The same concept applies to longer distances where the shooter needs to have sufficient power to see where to properly aim the rifle at the target.
About Optic Lens Covering
All modern-day rifle scope lenses are covered in special coatings. There are various types and qualities of lens coatings. When shopping for high end rifle optical devices, Lens finish can be a significant component of a rifle. The lenses are among the most important pieces of the scope given that they are what your eye sees through while sighting a rifle in on the target. The finishing on the lenses protects the lens surface as well as helps with anti glare from refracted daylight and color discernibility.
Details on Lens Coatings – HD Versus ED
Some rifle scope producers also use “HD” or high-def glass finishes which employ various procedures, rare earth compounds, aspects, and polarizations to enhance different color ranges and viewable definition through lenses. This high-def finishing is often used with greater density lens glass which drops light’s chance to refract through the lens glass. Some scope manufacturers use “HD” to refer to “ED” meaning extra-low dispersion glass. ED handles how certain colors are presented on the chromatic spectrum and the chromatic difference or aberration which is also called color distortion or fringing. Chromatic aberration can be noticeable around things with hard outlines as light hits the item from particular angles.
Rifle Optic Lens Single Covering Versus Multi-Coating
Different optic lenses can likewise have various coatings applied to them. All lenses normally have at least some type of treatment or finish applied to them prior to being used in a rifle scope or optic.
This lens treatment can safeguard 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 producers likewise make it a point to define if their optic lenses are layered or “multi” covered. This indicates the lens has numerous treatments applied to the surfaces. If a lens receives numerous treatments, it can show that a manufacturer is taking multiple steps to combat various natural elements like an anti-glare covering, a scratch resistant anti-abrasion finish, followed by a hydrophilic covering. This additionally does not always imply the multi-coated lens is much better than a single layered lens. Being “better” is dependent on the maker’s lens treatment techniques and the quality of components used in developing the rifle optic.
Anti-water Finish for Rifle Scopes
Water on a lens does not help with maintaining a clear sight picture through a scope at all. Many top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic coating.
Options for Installing Optics on Firearms
Mounting options for scopes can be found in a few options. There are the standard scope rings which are separately mounted to the scope and one-piece mounts which cradle the scope. These different types of mounts also generally can be found in quick release variations which use manual levers which allow rifle shooters to rapidly install and dismount the scopes.
Hex Key Glass Rings
Normal, clamp design 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 are developed for long range precision shooting. This type of scope install is fine for rifles which need a long lasting, sound mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Scope Mounts with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to rapidly attach and remove a scope from a rifle before reattaching it to a different rifle. Numerous scopes can even be switched out if they all use a compatible design mount. These types of mounts are convenient for long guns which are transported a lot, to swap out the optic from the rifle for protecting the scope, or for scopes which are used between multiple rifles.
Sealing and Gas Purging for Scope Tubes
Moisture inside your rifle glass can mess up a day of shooting and your highly-priced optic by resulting in fogging and generating residue inside of the scope tube. A lot of scopes protect against moisture from entering the optical tube with a system of sealing O-rings which are water resistant. Generally, these water resistant scopes can be submerged within 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be sufficient moisture prevention for common use rifles, unless you plan on taking your rifle sailing and are worried about the optic still functioning if it goes overboard and you can still find the firearm.
Gas Purged Rifle Optic Tubes
Another element of avoiding the accumulation of moisture within the rifle optic tube is filling the tube with a gas like nitrogen. Because this area is currently occupied by the gas, the glass is less altered by climate changes and pressure variations from the external environment which may possibly enable water vapor to leak in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to seek out.
