Description
Rifle Scope Product Details
Kalinka Optics POSP 3-9×42 1000m Rangefinder, Weaver
POSP ZOOM 3-9×42 W Rifle Scope 1000 Meter Rangefinder, Weaver / Picatinny Version. The military reticles have an extremely effective and useful height-based rangefinder for dual use, with graduated scales for both standing and prone figure estimation. The 1000 meter Dragunov height based gradient (choke style) rangefinder has extended distance inverted chevrons providing aiming points for 1000, 1100, and 1200 meters. Since the range calibrations are measured in equal amounts of MOA, all versions of the POSP can be used effectively with any caliber of weapon. They are particularly effective for .308 caliber weapons which require longer range reticles to make full use of their capabilities. The POSP features a red illuminated reticle which allows you to make perfect kill shots in dusk conditions. POSP’s feature professionally ground, crystal clear optics, nitrogen filling to prevent lens fogging, and larger diameter tubes for improved light gathering under the most severe conditions. It is waterproof and can be used in any climate condition. It comes with a high quality mil-spec finish and rubber lens cap, eye piece, and nylon carrying case. This model has Weaver / Picatinny top mount and suitable for any weaver and picatinny rails previously installed on your rifle.
Rifle Scope Product Features
The military reticles have an extremely effective and useful height-based rangefinder for dual use, with graduated scales for both standing and prone figure estimation.
The POSP features a red illuminated reticle which allows you to make perfect kill shots in dusk conditions.
POSP’s feature professionally ground, crystal clear optics, nitrogen filling to prevent lens fogging, and larger diameter tubes for improved light gathering under the most severe conditions
Since the range calibrations are measured in equal amounts of MOA, all versions of the POSP can be used effectively with any caliber of weapon.
It is waterproof and can be used in any climate condition
About the Kalinka Optics Scope Maker
Kalinka Optics is a premium maker for rifle scopes, optics, mounts, and other components used for firearms like rifles and long guns. They innovate and manufacture their products by using elements which are durable and long lasting. This includes the Kalinka Optics POSP 3-9×42 1000m Rangefinder, Weaver by Kalinka Optics. For more shooting goods, visit their website.
Facts About Rifle Glass
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 zoom by utilizing a series of lenses inside the scope. The scope’s alignment can be adapted to account for numerous natural considerations like wind speed and elevation increases to account for bullet drop.
The scope’s purpose is to help the shooter understand precisely where the bullet will land based on the sight picture you are viewing through the scope as you align the scope’s crosshair or reticle with the intended point of impact. Most contemporary rifle optics have around 11 parts which are located internally and outside of the scope body. These scope parts consist of the rifle scope’s body, lenses, elevation dials, objective focus rings, and other components. Learn about the eleven parts of rifle glass.
Rifle Glass Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The type of focal plane a scope has decides where the reticle or crosshair is located in connection with the optic’s magnification. It actually indicates the reticle is situated behind or ahead of the magnifying lens of the optic. Deciding on the best style of rifle glass is based on what type of hunting or shooting you intend on undertaking.
First Focal Plane Optic Info
First focal plane scopes (FFP) come with the reticle before the magnifying lens. This triggers the reticle to increase in size based on the extent of zoom being used. The result is that the reticle measurements are the same at the amplified range as they are at the non magnified range. One tick on a mil-dot reticle at one hundred yards without “zoom” is still the exact same tick at 100 yards by using 5x “zoom”. These kinds of scopes work for:
- Quick acquisition, long distance types of shooting
- Shooting circumstances where computations are minor
- Experienced shooters who know their aim point “hold over” and also “lead” equations for their firearms
- Shooters who don’t mind the reticle is bigger and occupies more visual eyesight area than a SFP reticle
Info About Second Focal Plane Glass
Second focal plane optics (SFP) feature the reticle behind the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick.
- Far away forms of shooting where shooters have more time to make ballistic computations
- Shooting where most shots take place within shorter proximities and ranges
- Shooters who would like a clearer optic sight picture without space used up by the larger sized FFP reticle
Zoom for Rifle Optics
The amount of zoom a scope offers is figured out by the diameter, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
About Single Power Lens Rifle Optics
A single power rifle optic or scope will have a magnification number designator like 4×32. This means the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this kind of optic can not change since it is a fixed power optic.
Adjustable Power Lens Rifle Optic Info
Variable power rifle scopes have adjustable power. It will note the magnification amount in a format such as 2-10×32. These numbers imply the zoom of the scope can be adjusted in between 2x and 10x power. This also incorporates the powers in-between 2 and 10. The power modification is accomplished by operating the power ring component of the scope near the back of the scope by the eye bell.
Power and Range
Here are some recommended scope power levels and the distances where they can be successfully used. Highly magnified optics will not be as efficient as lower magnification level rifle scope glass given that too much zoom can be a negative aspect depending on your shooting distance. The exact same concept relates to extended ranges where the shooter needs adequate power to see exactly where to best aim the rifle at the target.
Info on Lens Finish
All modern rifle optic lenses are layered. There are various types and qualities of glass coverings. When looking at luxury rifle scope systems, Lens covering can be a crucial element of defining the capability of the rifle. The glass lenses are one of the most important components of the glass considering they are what your eye sees through while sighting a rifle in on the target. The finish on the lenses shields the lens surface area and assists with anti glare from excess sunlight and color exposure.
ED Versus HD Glass
Some rifle scope producers even use “HD” or high-definition glass finishings that employ various procedures, chemicals, aspects, and polarizations to extract separate color ranges and viewable target visibility through lenses. This high-definition finish is frequently used with more costly, high density lens glass which decreases light’s ability to refract through the lens glass. Some scope producers use “HD” to refer to “ED” meaning extra-low dispersion glass. ED handles how colors are presented on the chromatic spectrum and the chromatic aberration which is similarly called color distortion or fringing. Chromatic aberration may be visible around things with hard edges and outlines as light hits the object from specific angles.
Glass Lens Single Finish Versus Multi-Coating
Various scope lenses can even have different finishes applied to them. All lenses typically have at least some kind of treatment or finishing applied to them before they are used in a rifle scope or optic. This is because the lens isn’t simply a raw piece of glass. It becomes part of the carefully tuned optic. It requires a coating to be applied to it so that it will be optimally usable in lots of types of environments, degrees of light (full light VS shade), and other shooting conditions.
Single covered lenses have a treatment applied to them which is normally a protective and enhancing multi-purpose treatment. This lens treatment can preserve the lens from scratches while reducing 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 producer and how much you spent for it. The scope’s maker and cost are indicators of the lens quality.
Some scope producers similarly make it a point to specify if their optic lenses are layered or “multi” covered. Being “better” depends on the manufacturer’s lens treatment technology and the quality of products used in developing the rifle scope.
Hydrophobic Scope Lens Finishing
Water on a lens does not assist with keeping a clear sight picture through a scope at all. Lots of top of the line and military grade scope makers will coat their lenses with a hydrophilic or hydrophobic finishing.
Rifle Scope Installing Choices
Installing solutions for scopes can be found 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 are made in quick release versions which use toss levers which allow rifle shooters to quickly install and dismount the scope.
Rifle Scope Mounts with Hex Key Rings
Standard, clamp-on design mounting scope rings use hex head screws to position to the flattop design Picatinny scope mounting rails on the tops of rifles. These kinds of scope mounts use double detached rings to support the scope, and are usually constructed from 7075 T6 billet aluminum which are designed for far away accuracy shooting. This kind of scope mount is effective for rifle systems which need a resilient, rock solid mount which will not move regardless of how much the scope is moved or abuse the rifle takes. These are the design of mounts you want for a dedicated scope setup on a reach out and touch someone hunting or interdiction firearm which will almost never need to be modified or adjusted. Blue 242 Loctite threadlocker can also be used to prevent the hex screw threads from backing out after they are installed safely in place. An example of these mounting rings are the 30mm type made by Vortex Optics. The set usually costs around $200 USD
Quick-Release Cantilever Glass Rings
These kinds of quick-release rifle scope mounts can be used to quickly attach and detach a scope from a rifle. If they all use a similar style mount, multiple scopes can also be switched out. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers attach nicely to a flat top design Picatinny rail. This allows the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while maintaining precision. These types of mounts come in convenient for shooting platforms which are carried a lot, to take off the glass from the rifle for protection, or for scopes which are chosen for use in between several rifles. An example of this mount type is the 30mm mount from Vortex Optics. It typically costs around $250 USD
What to Know About Rifle Glass Tube Sealing and Gas Purging
Wetness inside your rifle glass can spoil a day of shooting and your pricey optic by triggering fogging and making residue inside of the scope’s tube. A lot of scopes protect against humidity from getting in the scope tube with a series of sealing O-rings which are waterproof. Typically, 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 humidity prevention for conventional use rifles for hunting and sporting purposes, unless you plan on taking your rifle sailing and are concerned about the scope still functioning if it goes overboard and you can still rescue the gun.
What to Know About Glass Tube Gas Purging
Another part of avoiding the buildup of moisture inside of the rifle scope’s tube is filling the tube with a gas like nitrogen. Because this area is already occupied by the gas, the scope is less affected by temperature changes and pressure differences from the outdoor environment which might potentially permit water vapor to seep in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to look for.
