Last update on May 17, 2022 // Source: Amazon API
Rifle Scope Product Details
Sightmark Triple Duty 2.5-10×32 MDD Riflescope
Precision accuracyAdjustment lockWide field of viewPrecision multicoated opticsInternal lit reticle1/4 MOA locking turretsEasy focusing knobLightweight, Waterproof, and Shockproof
Rifle Scope Product Features
Weatherproof, shockproof, fogproof Windage/Elevation adjustment lock Second focal plane reticle (true at 10x) Etched reticle 30mm main tube Red reticle illumination
About the Sight Mark Manufacturer
Sight Mark is a premium maker for rifle scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They design and supply their scopes and related products working with building materials which are long lasting and resilient. This includes the Sightmark Triple Duty 2.5-10×32 MDD Riflescope by Sight Mark. For additional shooting products, visit their website.
Info About Rifle Scopes
Rifle scopes allow you to exactly align a rifle at different targets by lining up your eye with the target at range. They do this through magnifying the target by employing a series of lenses inside the scope. The scope’s alignment can be adjusted for consideration of different natural elements like wind speed and elevation decreases to make up for bullet drop.
The scope’s purpose is to understand precisely where the bullet will hit based upon the sight picture you are viewing via the scope as you line up the scope’s crosshair or reticle with the intended point of impact. Many contemporary rifle scopes and optics have about 11 parts which are found within and on the exterior of the scope body. These parts include the rifle scope’s body, lenses, windage and elevation dials, objective focus rings, and other elements. Learn about the eleven parts of rifle scopes.
Rifle Optic Types
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The kind of focal plane a scope has establishes where the reticle or crosshair is located in regard to the optic’s magnifying adjustments. It literally implies the reticle is situated behind or in front of the magnifying lens of the optic. Choosing the most desired form of rifle scope depends on what sort of shooting or hunting you plan on undertaking.
Info About First Focal Plane Optics
Focal plane scopes (FFP) feature the reticle in front of the magnifying lens. This induces the reticle to increase in size based on the level of zoom being used. The outcome is that the reticle measurements are the same at the enhanced distance as they are at the non amplified distance. One tick on a mil-dot reticle at one hundred yards without “zoom” is still the exact same tick at one hundred yards by using 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away kinds of shooting
- Shooting situations where calculations are small
- Experienced shooters who have an idea for their aim point “hold over” plus “lead” relationships for their firearms
- Shooters who don’t mind the reticle is bigger 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. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick measurement.
- Long distance types of shooting where shooters have extra time to make ballistic estimations
- Shooting where most shots take place within shorter ranges and proximities
- Shooters who would like a clearer optic picture with less space used up by the enlarged FFP reticle
Magnification for Rifle Optics
The amount of zoom a scope provides is determined by the diameter, thickness, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Single Power Lens Glass
A single power rifle scope uses a zoom number designator like 4×32. This indicates the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of scope can not change because it is a set power scope.
Variable Power Lens Rifle Scope Facts
Variable power rifle scopes can be adjusted between magnification power levels. It will note the zoom amount in a configuration like 2-10×32. These numbers indicate the zoom of the scope could be changed between 2x and 10x power. This always incorporates the power levels in-between 2 and 10. The power modification is accomplished utilizing the power ring part of the scope near the rear of the scope by the eye bell piece.
Power Levels and Range
Here are some suggested scope power settings and the ranges where they could be efficiently used. High power optics will not be as efficient as lower powered scopes considering too much zoom can be a negative aspect depending on your shooting distance. The exact same concept goes for longer distances where the shooter needs to have sufficient power to see precisely where to properly aim the rifle.
Optic Lens Coating
All cutting-edge rifle glass lenses are coated. Lens finishing is a vital aspect of a rifle’s setup when purchasing high end rifle optics and scope setups.
HD Versus ED Lens Coatings
Some scope makers also use “HD” or high-definition lens coverings which use various techniques, polarizations, chemicals, and aspects to draw out separate colors and viewable quality through the lens. Some scope producers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Scope Lens Coating Versus Multi-Coating
Various optic lenses can likewise have different coatings applied to them. All lenses generally have at least some type of treatment or finish applied to them before they are used in a rifle scope or optic.
This lens treatment can safeguard the lens from scratches while decreasing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope manufacturer and how much you paid for it.
Some scope makers also make it a point to specify if their optic lenses are covered or “multi” covered. Being “better” depends on the maker’s lens treatment innovation and the quality of products used in constructing the rifle scope.
Anti-water Lens Coverings
Water on an optic’s lens doesn’t assist with retaining a clear sight picture through an optic at all. Lots of top of the line and high-end scope makers will coat their lenses with a hydrophobic or hydrophilic finish. The Steiner Optics Nano-Protection is a good example of this sort of treatment. It provides protection for the exterior of the Steiner scope lens so the water particles can not bind to it or produce surface tension. The result is that the water beads move off of the scope to keep a clear, water free sight picture.
Rifle Scope Installation Choices
Installing options 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 types of mounts also usually can be found in quick release versions which use throw levers which enable rifle shooters to quickly install and remove the optics.
Hex Key Optic Ring Mounting Solutions
Normal, 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 a couple of different rings to support the optic, and are often made from 7075 T6 billet aluminum which is designed for long distance precision shooting. This type of scope mount is excellent for rifles which need a durable, sound mounting solution which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Optic Rings
These types of quick-release rifle scope mounts can be used to rapidly connect and detach a scope from a rifle before reattaching it to a different rifle. Several scopes can even be swapped out if they all use a similar style mount. These types of mounts come in handy for rifle platforms which are transferred a lot, to swap out the optic from the rifle for protection, or for scopes which are used between numerous rifles or are situationally focused.
What to Know About Glass Tube Sealing and Gas Purging
Moisture inside your rifle optic can destroy a day of shooting and your highly-priced optic by causing fogging and developing residue within the scope tube. A lot of optics protect against wetness from entering the scope tube with a series of sealing O-rings which are water resistant. Generally, these optics can be immersed under 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be plenty of moisture content avoidance for standard use rifles for hunting and sporting purposes, unless you plan on taking your rifle sailing and are worried about the scope still performing if it goes overboard and you can still find the gun.
Details on Rifle Scope Tube Gas Purging
Another component of preventing the buildup of moisture inside of the rifle scope tube is filling the tube with a gas like nitrogen. Given that this space is already occupied by the gas, the scope is less altered by climate alterations and pressure differences from the external environment which may possibly enable water vapor to permeate in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.