Description
Rifle Scope Product Details
Burris Xtreme Tactical XTR II 8-40x50mm Precision Rifle Scope with 5x Zoom and Zero Click Stop Adjustment
Rifle Scope Product Features
About this item
Designed for serious, technical, long-range precision rifle shooters, both tactical and competitive; Excellent resolution optics and tactical-appropriate reticles and adjustment knobs make it easier to identify targets and adjust for windage and elevation
Versatile 5x zoom system allows for a larger field of view at close ranges and better target acquisition at long ranges; Ergonomic side focus and easy-to-reach parallax adjustment from 50 yards to infinity for improved accuracy at long distances
Zero Click Stop adjustment knobs for quickly and easily reverting back to the original yardage setting without counting clicks; Advanced windage and elevation adjustments for accurate and repeatable reticle adjustments
High-grade optical glass provides excellent brightness and clarity with lasting durability; Precision-gauged and hand-fitted internal assemblies maintain a consistent point of impact through the magnification range, regardless of shock and vibration
Scope is waterproof and the nitrogen-filled body tubes prevent internal fogging in the cold and rain; Triple internal spring-tension system allows the scope to hold zero through shock, recoil, and vibrations
Burris Xtreme Tactical XTR II 8-40x50mm Precision Rifle Scope
NEW FOR 2019: Model 201081 is a Rear Focal Plane scope with the new F-Class DCH reticle. It is non-illuminated. It’s designed to provide the extreme precision required for benchrest competitors.
The XTR II 8-40x is the largest magnification scope in the entire Burris lineup. While it was intended primarily for bench rest and fixed-position extreme long range targets, it’s also become very popular for people shooting prairie dogs and other varmints from the next county over.
The XTR II 8-40x50mm uses the XT-80 click adjustment knob, which provides 80 clicks per rotation. The F-Class reticle is MOA.
Features
Designed for serious, technical, long-range precision rifle shooters
Multi-turn adjustment knobs have a 1/8-MOA adjustment and feature true Zero Click Stop; knobs offer 8 mils per rotation, with multi revolutions of adjustment
34 mm body tube
Versatile 5-times zoom system allows for a larger field of view at close ranges and better target acquisition at long ranges
Zero Click Stop adjustment knobs let you quickly and easily revert back to the original yardage setting without counting clicks
Ergonomic side focus, and easy-to-reach parallax adjustment from 50 yds. to infinity for improved accuracy at long distances
High-grade optical glass provides excellent brightness and clarity with lasting durability
11 brightness settings (spanning night vision, low light, and daytime), with a convenient battery-saver position between each setting
Triple internal spring-tension system allows the scope to hold zero through shock, recoil, and vibrations
Nitrogen-filled body tubes prevent internal fogging in the cold and rain
About the Burris Optics Company
Burris Optics is a premium maker for firearm scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They innovate and build their scopes, mounts, and related products by making the most of building materials which are resilient and long lasting. This includes the Burris Xtreme Tactical XTR II 8-40x50mm Precision Rifle Scope with 5x Zoom and Zero Click Stop Adjustment by Burris Optics. For more shooting products, visit their site.
Information About Rifle Scopes
Rifle scopes allow you to exactly aim a rifle at different targets by aligning your eye with the target at range. They do this through zoom by using a series of lenses inside the scope. The scope’s positioning can be adapted for the consideration of different environmental aspects like wind and elevation decreases to make up for bullet drop.
The scope’s purpose is to help the shooter understand precisely where the bullet will hit based upon the sight picture you are seeing using the optic as you align the scope’s crosshair or reticle with the intended point of impact. Many modern rifle scopes have about eleven parts which are arranged within and externally on the scope body. These optic pieces include the rifle scope’s body, lenses, windage dials, objective focus rings, and other components. See all eleven parts of a rifle scope.
Rifle Glass Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The sort of focal plane a scope has establishes where the reticle or crosshair lies in connection with the scopes zoom. It actually suggests the reticle is located behind or ahead of the magnification lens of the scope. Selecting the best form of rifle optic is based upon what kind of shooting or hunting you anticipate doing.
Info About First Focal Plane Optics
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These styles of scopes are useful for:
- Quick acquisition, long distance kinds of shooting
- Shooting scenarios where calculations are low
- Experienced shooters who recognize their aim point “hold over” as well as “lead” correlations for their firearm
- Shooters who don’t mind the reticle is bigger and occupies more visual eyesight space than a SFP reticle
Second Focal Plane Scope Facts
Second focal plane optics (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 kinds of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots occur within much shorter proximities and ranges
- Shooters who want a clearer optic picture without room taken up by the bigger FFP reticle
Details on Rifle Scope Magnification
The quantity of magnification a scope supplies 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 Fixed Single Power Lens Scopes
A single power rifle optic or scope uses a magnification number designator like 4×32. This suggests the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of scope can not adjust considering that it is set from the factory.
Adjustable Power Lens Rifle Scope Info
Variable power rifle scopes can be adjusted between magnification power levels. These types of scopes will note the zoom amount in a format like 2-10×32. These numbers indicate the zoom of the scope could be adjusted in between 2x and 10x power. This also incorporates the powers in-between 2 and 10. The power manipulation is achieved utilizing the power ring part of the scope near the rear of the scope by the eye bell.
The Power Level and Range of Scopes
Here are some recommended scope powers and the ranges where they may be successfully used. Highly magnified optics will not be as beneficial as lower magnification level rifle scope glass since too much magnification can be a negative aspect depending on your shooting distance. The exact same idea applies to extended distances where the shooter needs enough power to see where to best aim the rifle at the target.
Lens Finishing for Rifle Glass
All modern-day rifle scope and optic lenses are covered in special coatings. There are different types and qualities of lens coatings. When thinking about high end rifle targeting devices, Lens finishing can be a significant aspect of a rifle. The glass lenses are among the most important parts of the glass because they are what your eye sees through while sighting a rifle in on the point of impact. The covering on the lenses shields the lens surface and also improves anti glare capabilities from refracted sunlight and color visibility.
Details on Rifle Scope Lens Coatings – HD Versus ED
Some rifle scope makers even use “HD” or high-def lense finishings which use different procedures, chemical applications, polarizations, and elements to draw out various color ranges and viewable target definition through lenses. This high-definition finishing is often used with more costly, high density glass which drops light’s ability to refract through the lens glass. Some scope suppliers use “HD” to refer to “ED” suggesting extra-low dispersion glass. ED handles how certain colors are represented on the chromatic spectrum and the chromatic aberration or deviance which is also called color distortion or fringing. Chromatic aberration is often noticeable over objects with hard outlines as light hits the object from certain angles.
Rifle Glass Lens Single Finish Versus Multi-Coating
Various optic lenses can also have various coverings applied to them. All lenses typically have at least some type of treatment or coating applied to them prior to being used in a rifle scope or optic.
Single coated lenses have a treatment applied to them which is generally a protective and improving 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 optic. The quality of a single covered lens depends on the scope designer and the amount you spent on it. Both the manufacturer and amount are indications of the lens quality.
Some scope manufacturers also make it a point to specify if their optic lenses are layered or “multi” coated. Being “better” depends on the manufacturer’s lens treatment innovation and the quality of materials used in developing the rifle scope.
What to Know About Hydrophobic Finish
Water on a lens doesn’t help with preserving 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 hydrophilic or hydrophobic finishing.
Alternatives for Mounting Glass on Long Guns
Mounting options for scopes are available in a few choices. 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 normally are made in quick release versions which use manual levers which permit rifle operators to quickly mount and remove the scopes.
Glass Mounts with Hex Key Rings
Basic, clamp style mounting scope rings use hex head screws to position to the flattop style Picatinny scope mounting rails on rifles. These kinds of scope mounts use a pair of individual rings to support the optic, and are made from 7075 T6 billet aluminum which are created for long distance accuracy shooting. This form of scope mount is effective for rifles which need a durable, hard use mount which will not move no matter just how much the scope is moved about or jarring the rifle takes. These are the style of mounts you really want to have for a specialized optics setup on a long distance scouting or interdiction firearm which will almost never need to be modified or adjusted. Blue 242 Loctite threadlocker can also be used on the mount screws to protect against the hex screw threads from backing out after they are mounted securely in position. An example of these mounting rings are the 30mm style from Vortex Optics. The set normally costs around $200 USD
Quick-Release Cantilever Scope Ring Mounts
These types of quick-release rifle scope mounts can be used to rapidly remove a scope from a rifle and reattach it to a different rifle. Several scopes can also be swapped out if they all use a similar designed mount. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers fasten securely to a flat top design Picatinny rail. This lets the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while keeping the original sighting settings. These kinds of mounts come in practical for shooting platforms which are transported a lot, to remove the glass from the rifle for protection, or for aiming systems which are utilized in between numerous rifles. An example of this mount style is the 30mm mount designed by Vortex Optics. It generally costs around $250 USD
Sealing and Gas Purging for Rifle Optic Tubes
Moisture inside your rifle optic can ruin a day of shooting and your pricey optic by inducing fogging and creating residue within the scope’s tube. Many optics prevent wetness from getting in the optical tube with a system of sealing O-rings which are water resistant. Typically, these optics can be submerged under 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be more than enough moisture prevention for standard use rifles, unless you intend on taking your rifle boating and are concerned about the optic still functioning if it goes overboard and you can still find the gun.
Gas Purged Rifle Optic Tubes
Another component of preventing the buildup of wetness inside of the rifle scope tube is filling the tube with a gas like nitrogen. Considering that this space is already occupied by the gas, the optic is less influenced by condition alterations and pressure distinctions from the external environment which could possibly permit 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.
