Description
Last update on August 13, 2022 // Source: Amazon API
Rifle Scope Product Details
Schmidt Bender PM II 3-20×50 Ultra Short DT II+ Grid .1 mrad 667-911-422-M2-I5
Schmidt Bender PM II 3-20×50 Ultra Short DT II+ GRID .1 mrad 667-911-422-M2-I5
Rifle Scope Product Features
About the Schmidt & Bender Scope Maker
Schmidt & Bender is a premium maker for rifle scopes, optics, mounting solutions, and other accessories used for firearms like rifles and long guns. They design and manufacture their scopes and related products by choosing building materials which are long lasting and resilient. This includes the Schmidt Bender PM II 3-20×50 Ultra Short DT II+ Grid .1 mrad 667-911-422-M2-I5 by Schmidt & Bender. For additional shooting goods, visit their site.
About Optics
Rifle scopes enable you to specifically align a rifle at various 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 alignment can be adjusted for consideration of different environmental things like wind and elevation increases to make up for bullet drop.
The scope’s function is to understand exactly where the bullet will land based on the sight picture you are viewing with the optic as you line up the scope’s crosshair or reticle with the intended point of impact. Most modern rifle optics have around 11 parts which are arranged within and outside of the scope body. These optic pieces include the rifle scope’s body, lenses, elevation turrets, focus rings, and other parts. See all eleven parts of scopes.
Rifle Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The form of focal plane an optic has decides where the reticle or crosshair is located in connection with the scopes zoom. It simply means the reticle is situated behind or in front of the magnifying lens of the scope. Looking for the most effective sort of rifle glass is based upon what sort of shooting or hunting you plan on doing.
First Focal Plane Glass
Focal plane scopes (FFP) come with the reticle in front of the magnification lens. This induces the reticle to increase in size based on the amount of magnification 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 100 yards with no “zoom” is still the very same tick at 100 yards with 5x “zoom”. These kinds of scopes are practical for:
- Quick acquisition, long distance types of shooting
- Shooting situations where computations are marginal
- Experienced shooters who understand their aim point “hold over” plus “lead” ratios for their firearms
- Shooters who don’t mind the reticle is enlarged and requires more visual sight area than a SFP reticle
Info on Second Focal Plane Scopes
Second focal plane scopes (SFP) include the reticle behind the zoom lens. This induces the reticle to remain at the exact same overall size in relation to the volume of magnification being used. The final result is that the reticle dimensions adjust based on the magnification employed to shoot over longer ranges considering that the reticle measurements present different increments which fluctuate with the zoom level. In the FFP example 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 optics are convenient for:
- Long distance kinds of shooting where shooters have additional time to make ballistic computations
- Shooting where most of the shots take place within shorter proximities and ranges
- Shooters who want a clearer optic picture without room taken up by the enlarged FFP reticle
Zoom for Rifle Optics
The amount of zoom a scope provides is identified 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 Power Lens Glass Details
A single power rifle optic uses a zoom number designator like 4×32. This implies the zoom power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of optic can not change given that it is a set power scope.
Info on Variable Power Lens Optics
Variable power rifle scopes have adjustable power. These types of scopes will note the magnification level in a configuration like 2-10×32. These numbers suggest the zoom of the scope could be changed in between 2x and 10x power. This additionally incorporates the powers in-between 2 and 10. The power adaptation is achieved by applying the power ring component of the scope near the back of the scope by the eye bell piece.
Power and Range Correlations
Here are some recommended scope powers and the ranges where they may be effectively used. Always remember that higher magnification optics will not be as effective as lower magnification level optics and scopes since increased magnification can be a detractor. The very same idea applies to extended distances where the shooter needs to have increased power to see where to best aim the rifle at the target.
About Scope Lens Finishing
All contemporary rifle scope and optic lenses are layered. Lens finishing can be a crucial element of a rifle when looking into high end rifle optics and scope systems.
HD Versus ED Lens Coatings
Some scope manufacturers also use “HD” or high-definition lens finishes which use various procedures, chemicals, polarizations, and aspects to draw out separate colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Optic Lens Single Finishing Versus Multi-Coating
Different optic lenses can also have different finishes used to them. All lenses typically have at least some type of treatment or covering applied to them before being used in a rifle scope or optic.
This lens treatment can protect 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 maker and how much you paid for it.
Some scope manufacturers similarly make it a point to define if their optic lenses are coated or “multi” covered. Being “much better” depends on the maker’s lens treatment innovation and the quality of products used in building the rifle scope.
Hydrophobic Finish for Glass
Water on a lens doesn’t help with maintaining a clear sight picture through a scope at all. Many top of the line and military grade optic companies will coat their lenses with a hydrophobic or hydrophilic covering which is water repellent.
Glass Installation Alternatives
Installing approaches for scopes are available in a couple of options. There are the standard scope rings which are separately mounted to the scope and one-piece scope mounts which cradle the scope. These various kinds of mounts also typically are made in quick release versions which use manual levers which enable rifle operators to rapidly mount and remove the optics.
Glass Mounts with Hex Key Rings
Standard, clamp design mounting scope rings use hex head screws to mount to the flattop style Picatinny scope mount rails on rifles. These types of scope mounts use two different rings to support the optic, and are often made from 7075 T6 billet aluminum which are created for long range accuracy shooting. This type of scope install is perfect for rifles which need a durable, rock solid mounting solution which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Scope Rings
These types of quick-release rifle scope mounts can be used to rapidly take off a scope from a rifle and reattach it to a different rifle. Multiple scopes can also be switched out if they all use a similar style mount. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect tightly to a flat top style Picatinny rail. This permits the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while retaining accuracy. These types of mounts are useful and practical for shooting platforms which are moved a lot, to take off the glass from the rifle for protection, or for sight systems which are utilized in between several rifles. An example of this mount style is the 30mm mount from the Vortex Optics manufacturer. It usually costs around $250 USD
Sealing and Gas Purging for Rifle Optic Tubes
Wetness inside your rifle scope can ruin a day of shooting and your costly optic by bringing about fogging and producing residue inside of the scope tube. The majority of scopes prevent moisture from getting in the scope tube with a system of sealing O-rings which are water resistant.
Details on Optic Tube Gas Purging
Another element of preventing the buildup of wetness inside of the rifle optic tube is filling the tube with a gas like nitrogen. Since this space is currently occupied by the gas, the optic is less influenced by temp alterations and pressure distinctions from the outdoor environment which could possibly allow water vapor to seep in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a decent rifle scope to look for.
