Description
Rifle Scope Product Details
German Precision Optics GPO PASSION™ 4X 3-12×56 Riflescope, G4 Reticle, Black Matte,
German Precision Optics GPO PASSION 4X 3-12×56 Riflescope, G4 Reticle, Black Matte R400
Rifle Scope Product Features
About the German Precision Optics Company
German Precision Optics is a premium company for long gun scopes, optics, mounting solutions, and other add-ons used for guns like rifles and long guns. They create and make their mounts and related products by applying building materials which are durable and long lasting. This includes the German Precision Optics GPO PASSION™ 4X 3-12×56 Riflescope, G4 Reticle, Black Matte, by German Precision Optics. For additional shooting items, visit their site.
Glass Details
Rifle scopes enable you to specifically aim a rifle at different targets by aligning your eye with the target at range. They accomplish this through zoom by making use of a series of lenses within the scope. The scope’s alignment can be dialed in to account for numerous environmental elements like wind speed and elevation to make up for bullet drop.
The scope’s function is to understand exactly where the bullet will hit based on the sight picture you are seeing through the optic as you line up the scope’s crosshair or reticle with the target. Most modern rifle optics have about eleven parts which are found inside and externally on the optic. These parts include the rifle scope’s body, lenses, elevation turrets, focus rings, and other components. Learn about the eleven parts of optics.
Rifle Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Choosing the optimal type of rifle glass is based around what type of shooting you plan on doing.
First Focal Plane Scope Info
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. These styles of scopes are helpful for:
- Quick acquisition, long distance kinds of shooting
- Shooting scenarios where computations are marginal
- Experienced shooters who understand their aim point “hold over” and “lead” correlations for their weapon
- Shooters who do not mind the reticle is enlarged and requires more visual eyesight room than a SFP reticle
Second Focal Plane Scopes
Second focal plane optics (SFP) come with the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick measurement.
- Long distance types of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots happen within much shorter distances and ranges
- Shooters who like a clearer optic sight picture without area used up by the bigger FFP reticle
Zoom for Optics
The quantity of scope zoom you need on your glass depends upon the type of shooting you choose to do. Nearly every kind of rifle optic gives some level of zoom. The level of magnification a scope offers is identified by the diameter, density, and curves of the lens glass within the rifle scope. The magnifying level of the optic is the “power” of the scope. This implies what the shooter is looking at through the scope is amplified times the power factor of what can usually be seen by human eyes.
Fixed Single Power Lens Rifle Glass Facts
A single power rifle scope and optic will have 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 magnification of this kind of scope can not fluctuate given that it is fixed.
About Variable Power Lens Optics
Variable power rifle scopes use variable power levels. The power modification is achieved by using the power ring part of the scope near the rear of the scope by the eye bell.
Scope Power and Ranges
Here are some suggested scope power levels and the ranges where they may be effectively used. Highly magnified rifle scope glass will not be as effective as lower magnification glass considering too much zoom can be a bad thing. The exact same concept applies to extended ranges where the shooter needs increased power to see where to properly aim the rifle at the target.
Lens Covering for Rifle Optics
All modern-day rifle optic and scope lenses are layered. There are various types and qualities of glass finishes. When thinking about high end rifle scope units, Lens coating can be a significant component of a rifle. The lenses are among the most important pieces of the glass considering they are what your eye looks through while sighting a rifle in on the point of impact. The covering on the lenses shields the lens exterior and even assists with anti glare from excess sunlight and color visibility.
HD Versus ED Lens Coatings
Some rifle scope makers additionally use “HD” or high-definition lense finishes that use different processes, polarizations, chemicals, and aspects to enhance a wide range of color ranges and viewable definition through the lens. This high-def coating is often used with increased density glass which lowers light’s potential to refract through the lens glass. Some scope makers use “HD” to describe “ED” implying extra-low dispersion glass. ED handles how certain colors are represented on the chromatic spectrum and the chromatic deviance or aberration which is also called color distortion or fringing. Chromatic aberration can be visible over items with hard shapes as light hits the item from specific angles.
Rifle Glass Lens Single Finish Versus Multi-Coating
Different optic lenses can also have various coverings applied to them. All lenses usually have at least some kind of treatment or covering applied to them prior to being used in a rifle scope or optic. This is since the lens isn’t just a raw piece of glass. It is part of the finely tuned optic. It requires a coating to be applied to it so that the lens will be optimally functional in many types of environments, degrees of sunshine (full light VS shade), and other shooting conditions.
Single layered lenses have a treatment applied to them which is typically a protective and boosting multi-purpose treatment. This lens treatment can protect the lens from scratches while minimizing glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends on the scope designer and the amount you spent on it. Both are signs of the lens quality.
Some scope manufacturers similarly make it a point to define if their optic lenses are coated or “multi” coated. Being “better” depends on the manufacturer’s lens treatment innovation and the quality of materials used in constructing the rifle scope.
Anti-water Lens Finishing
Water on a lens doesn’t assist with keeping a clear sight picture through a scope at all. Many top of the line and high-end scope makers will coat their lenses with a hydrophobic or hydrophilic coating which is water repellent.
Choices for Mounting Rifle Glass on Long Guns
Mounting solutions for scopes can be found in a few choices. There are the standard scope rings which are separately installed to the optic and one-piece mounts which cradle the scope. These different types of mounts also typically can be found in quick release variations which use throw levers which permit rifle operators to rapidly install and dismount the glass.
Hex Key Scope Ring Mounts
Basic, clamp style mounting scope rings use hex head screws to install to the flattop design Picatinny scope mount rails on the tops of rifles. These varieties of scope mounts use two separate rings to support the optic, and are normally made from 7075 T6 billet aluminum or similar materials which are made for long distance accuracy shooting. This form of scope mount is good for rifles which need a long lasting, rock solid mount which will not shift despite how much the scope is moved or abuse the rifle takes. These are the type of mounts you want for a dedicated scope system on a far away scouting or competitors rifle which will pretty much never need to be altered or adjusted. Blue 242 Loctite threadlocker can additionally be used on the mount’s screws to prevent the hex screws from wiggling out after they are installed tightly in position. An example of these mounting rings are the 30mm style made by Vortex Optics. The set usually costs around $200 USD
Quick-Release Cantilever Scope Rings
These types of quick-release rifle scope mounts can be used to rapidly detach a scope and connect it to a different rifle. Several scopes can also be switched out if they all use a compatible style mount. These types of mounts are handy for rifles which are transferred a lot, to remove the optic from the rifle for protection, or for optics which are used between several rifles.
Sealing and Gas Purging for Rifle Optic Tubes
Wetness inside your rifle scope can destroy a day of shooting and your costly optic by triggering fogging and creating residue inside of the scope tube. Most scopes avoid wetness from entering the scope tube with a system of sealing O-rings which are waterproof.
Optic Gas Purging
Another part of preventing the accumulation of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Given that this space is already occupied by the gas, the glass is less influenced by temperature level alterations and pressure variations from the external environment which may possibly enable water vapor to permeate in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to seek out.
