Description
Rifle Scope Product Details
Nikko Stirling Diamond 3-9×42 4 Dot Scope, Black
The Nikko Stirling Diamond 3-9×42 4 Dot Scope has a 30 millimeter body tube for low light conditions. Considered stronger and more robust. The Diamond 30 millimeter series offers all of the features of the one inch series. Scopes are nitrogen filled and guaranteed 100% waterproof, fog proof and shockproof. Supplied with screw-on lens caps, Allen key, calibrated P/A wheel, lens cloth and instructions. Key features include optical lens coating for brightness, low profile adjustments, fast finger adjustable dials, rubber enhanced zoom ring, speed focused eyepiece, dark forest green enhancements and a one piece body for strength. Actual magnification 3-9. Objective diameter is 42 millimeters. Field of view at 100 yards is 39-14. Eye relief is 3.5 Inch.
Rifle Scope Product Features
German number 4 reticle
Certified Japanese lenses
CNC machined parts
About the Nikko Stirling Scope Maker
Nikko Stirling is a premium supplier for firearm scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They design and build their mounts and related products by using materials which are long lasting and durable. This includes the Nikko Stirling Diamond 3-9×42 4 Dot Scope, Black by Nikko Stirling. For additional shooting items, visit their site.
Glass Information
Rifle scopes permit you to exactly align a rifle at different targets by aligning your eye with the target over a range. They accomplish this through magnifying the target by using a series of lenses inside the scope. The scope’s alignment can be adjusted for consideration of various natural elements like wind and elevation to make up for bullet drop.
The scope’s purpose is to understand precisely where the bullet will land based on the sight picture you are viewing using the scope as you align the scope’s crosshair or reticle with the intended target. A lot of contemporary rifle scopes have around 11 parts which are found inside and on the exterior of the optic. These optic pieces include the rifle scope’s body, lenses, windage turrets or dials, objective focus rings, and other components. See all eleven parts of a rifle optical system.
Rifle Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The kind of focal plane a scope has decides where the reticle or crosshair is located in relation to the optic’s magnifying adjustments. It actually implies the reticle is located behind or ahead of the magnification lens of the scope. Picking the most effective style of rifle scope is based on what kind of shooting you anticipate undertaking.
First Focal Plane Optic Details
First focal plane glass (FFP) feature the reticle in front of the magnifying lens. This causes the reticle to increase in size based upon the amount of magnification being used. The benefit is that the reticle measurements are the same at the magnified distance as they are at the non amplified distance. One tick on a mil-dot reticle at 100 yards with no “zoom” is still the exact same tick at 100 yards by using 5x “zoom”. These types of scopes are beneficial for:
- Quick acquisition, long distance types of shooting
- Shooting circumstances where calculations are marginal
- Experienced shooters who understand their aim point “hold over” as well as “lead” correlations for their rifles
- Shooters who don’t mind the reticle is bigger and uses up more visual sight space than a SFP reticle
Second Focal Plane Optic Info
Second focal plane glass (SFP) include the reticle behind the zoom lens. This triggers the reticle to remain at the exact same size relative to the volume of magnification being used. The final result is that the reticle dimensions adjust based upon the zoom employed to shoot over lengthier ranges because the reticle measurements present different increments which differ with the zoom. In the FFP illustration with the SFP optic, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick reticle measurement. These styles of scopes are handy for:
- Long distance forms of shooting where shooters have extra time to make ballistic estimations
- Shooting where most shots take place within much shorter ranges and spaces
- Shooters who prefer a clearer optic sight picture with less area taken up by the bigger FFP reticle
Rifle Optic Zoom
The amount of magnification a scope supplies is determined by the size, thickness, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Single Power Lens Optic Info
A single power rifle scope and optic will have a magnification number designator like 4×32. This suggests the magnification power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of scope can not adjust since it is a set power scope.
Adjustable Power Lens Scope Details
Variable power rifle scopes have adjustable power. It will note the magnification level in a format such as 2-10×32. These numbers imply the magnification of the scope can be adjusted in between 2x and 10x power. This always involves the power levels in-between 2 and 10. The power manipulation is accomplished by operating the power ring part of the scope near the back of the scope by the eye bell piece.
The Power Level and Range of Scopes
Here are some recommended scope powers and the ranges where they could be effectively used. Always remember that high power glass will not be as efficient as lower magnification level optics due to the fact that excessive magnification can be a bad thing. The same idea goes for longer distances where the shooter needs to have adequate power to see precisely where to properly aim the rifle.
About Rifle Optic Lens Coating
All modern rifle optic and scope lenses are coated. Lens finish is an essential aspect of a rifle when considering high end rifle optics and scope equipment.
HD Versus ED Lens Coatings
Some scope manufacturers also use “HD” or high-definition lens finishes which use different procedures, polarizations, aspects, and chemicals to draw out different colors and viewable quality through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Finishing Versus Multi-Coating for Rifle Scopes
Different optic lenses can also have various coatings applied to them. All lenses usually have at least some type of treatment or finishing used to them before being used in a rifle scope or optic.
This lens treatment can offer protection to the lens from scratches while lowering glare and other less beneficial things experienced in the shooting environment while sighting in with the scope. The quality of a single covered 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 coated or “multi” covered. Being “much better” depends on the manufacturer’s lens treatment technology and the quality of products used in developing the rifle scope.
Rifle Optic Lens Hydrophobic Finish
Water on an optic’s lens does not support keeping a clear sight picture through an optic whatsoever. Many top of the line and premium scope producers will coat their lenses with a hydrophilic or hydrophobic covering. The Steiner Optics Nano-Protection is a fine example of this type of treatment. It provides protection for the exterior surfaces of the Steiner optic lens so the water molecules can not bind to it or produce surface tension. The outcome is that the water beads sheet off of the scope to keep a clear, water free sight picture.
Optic Installing Alternatives
Installing solutions for scopes are available in a few choices. There are the standard scope rings which are individually installed to the optic and one-piece mounts which cradle the scope. These various kinds of mounts also usually come in quick release versions which use manual levers which enable rifle operators to quickly install and remove the scope.
Hex Key Glass Rings
Standard, clamp-on design mounting optic rings use hex head screws to position to the flattop design Picatinny scope mount rails on rifles. These styles of scope mounts use double individual rings to support the scope, and are normally constructed from 7075 T6 billet aluminum or similar materials which are created for long distance precision shooting. This form of scope mount is effective for rifle systems which require a resilient, hard use mount which will not shift despite just how much the scope is moved or abuse the rifle takes. These are the type of mounts you should get for a specialized scope setup on a far away scouting or tournament long gun which will almost never need to be modified or recalibrated. Blue 242 Loctite threadlocker can also be used on the mount’s screws to prevent the hex screw threads from wiggling out after they are installed securely in position. An example of these rings are the 30mm style made by the Vortex Optics brand. The set generally costs around $200 USD
Rifle Glass Mounting Solutions with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to quickly remove a scope and attach it to a different rifle. Multiple scopes can also be switched out if they all use a similar style mount. These types of mounts are convenient for rifles which are carried a lot, to swap out the optic from the rifle for protecting the scope, or for scopes which are used in between several rifles.
About Scope Tube Sealing and Gas Purging
Moisture inside your rifle optic can destroy a day of shooting and your costly optic by causing fogging and developing residue inside of the scope tube. A lot of scopes prevent moisture from entering the scope tube with a system of sealing O-rings which are waterproof.
What to Know About Rifle Glass Tube Gas Purging
Another element of preventing the accumulation of moisture 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 scope is less impacted by temperature shifts and pressure differences from the external environment which could potentially allow water vapor to seep in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to seek out.
