Description
Rifle Scope Product Details
BARSKA 3-12×40 AO Hot Magnum .17 And .22 Interchangeable 30/30 Riflescope
3-12×40 AO, Hot Magnum , Black Matte, 30/30, Engineered with revolutionary Bullet Drop Technology, interchangeable .22 BDC elevation knobs for 40GR, 38GR and 36GR .22 bullets, high density optical glass for crisp edge-to-edge clarity, Pre-calculated trajectory compensation from 100 to 300 yards, multi-coated optics for brighter viewing and adjustable objective (AO) for parallax correction, Backed by BARSKA’s Limited Lifetime Warranty. Specifications: – Magnification: 3-12x – Objective Lens: 40mm – Waterproof: Yes – Fogproof: Yes – Reticle: 30/30 – Exit Pupil: 10.8-3.3mm – Optical Coating: Multi Coated – Field of View (ft100yds/m100m): 26.7/8.93x, 7.4/2.512x – Eye Relief: 3.1 inch – Click Value: 1/4″ – Adjustment Knob: Adj. obj. lens, adj. parallax, adj. elevation – Tube Diameter: 1 inch – Finish: Black Matte – Weight: 18.88 oz. – Length: 13.75 inch – Included Accessories: interchangeable .22 BDC elevation knobs for 40GR, 38GR and 36GR .22 bullets, Lens Covers and Lens Cloth – Warranty: Limited Lifetime Warranty
Rifle Scope Product Features
About this item
Precision Aiming: The 3-12x magnification scope features 1/4 MOA click adjustments to improve accuracy.
Quality Construction: The scope comes with multi-coated optics, providing impressive viewing clarity. Tube diameter 1″.
30/30 Reticle: The scope comes with 30/30 reticle, high density optical glass, and adjustable objective for easy targeting.
BDC Elevation: The interchangeable . 17 and . 22 bullet drop turrets provide trajectory compensation for . 17 Magnum rimfire 17 grain bullets, as well as 40, 38, and 36 grain . 22 bullets.
Robust Design: The scope is built with extra-rigid construction, being waterproof, fogproof, and shockproof.
AC10848
Specs
Item: AC10848
Field of View(ft @ 100yds): 26.7 @ 3x , 7.4 @ 12x
Eye Relief: 3.1 inch
Exit Pupil: 10.8-3.3mm
Click Value: 1/4 MOA
Focal Plane: Second
Length: 13.75″ ; Weight: 18.88 oz ; 1″ Tube Diameter
Included: Scope Caps ; BDC Turrets ; Lens Cloth
3-12x40mm AO Hot Magnum .17 HMR / .22 BDC Rifle Scope
by Barska
Engineered with revolutionary bullet-drop technology, Hot Magnum scopes will make you an extreme performer when it comes to .22 cal and .17 cal Magnum rimfire shooting.To provide extreme accuracy, the scope’s elevation knob is precisely calculated to compensate for the elliptical drop of the .17 Magnum rimfire with a 17 grain bullet, as well as 40, 38, & 36 grain bullets of .22 caliber. Also features high density optical glass, multi-coated optics and adjustable objective.
3-12x Magnification
40mm Objective Lens
Multi-coated Optics
Interchangeable .17 HMR / .22 BDC
30/30 Reticle
Adjustable Objective
Waterproof, Fogproof and Shockproof
Durable, Light Weight Riflescope
This 3-12×40 riflescope is durable and lightweight, perfect for hunting or target practice.
BDC Elevation
The scope comes with interchangeable .17 and .22 BDC knobs, featuring pre-calculated trajectory compensation for 17 grain bullets of .17 Magnum rimfire, as well as 40, 38, and 36 grain .22 bullets.
Zoom Adjustment
6-18x adjustable zoom allows users to get up close to the target, suitable for mid- to long-range targeting.
Reticle
The scope comes with a crosshair 30/30 reticle, allowing the shooter to easily aim at the target.
AC10848 AC10850 AC10846 AC10552 AC12451 AC12462
Magnification 3-12x 6-18x 2-7x 3-9x 3-9x 3-12x
Objective Lens 40mm 40mm 32mm 42mm 32mm 50mm
Lens Coating Multi-Coated Multi-Coated Multi-Coated Fully-Coated Fully Multi-Coated Fully Multi-Coated
Click Value 1/4 MOA 1/4 MOA 1/4 MOA 1/4 MOA 1/4 MOA 1/4 MOA
Reticle 30/30 30/30 30/30 Illuminated 30/30 Illuminated Mil-Dot Illuminated Mil-Dot
Turret .17 HMR / .22 BDC .17 HMR / .22 BDC .17 HMR / .22 BDC Capped Capped Capped
Length 13.75″ 15.65″ 12″ 9.3″ 12.7″ 14.25″
Product Weight 18.88 oz 20.48 oz 16.64 oz 16 oz 12.6 oz 15.9 oz
About the BARSKA Manufacturer
BARSKA is a premium company for firearm scopes, optics, mounts, and other components used for guns like rifles and long guns. They style and build their products making the most of materials which are resilient and long lasting. This includes the BARSKA 3-12×40 AO Hot Magnum .17 And .22 Interchangeable 30/30 Riflescope by BARSKA. For more shooting goods, visit their site.
All About Glass
Rifle scopes enable you to precisely aim a rifle at various targets by lining up your eye with the target at range. They do this through zoom by making use of a series of lenses within the scope. The scope’s positioning can be dialed in to take into account separate ecological aspects like wind speed and elevation increases or decreases to make up for bullet drop.
The scope’s purpose is to help shooters understand precisely where the bullet will hit based on the sight picture you are seeing via the scope as you line up the scope’s crosshair or reticle with the intended target. A lot of contemporary rifle scopes have about eleven parts which are found within and outside of the optic. These scope parts consist of the rifle scope’s body, lenses, elevation dials or turrets, objective focus rings, and other components. Learn about the eleven parts of rifle scopes.
About Rifle Optic Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Choosing the finest type of rifle optic depends on what type of shooting you plan on doing.
First Focal Plane Optic Details
Focal plane scopes (FFP) include the reticle in front of the zoom lens. These kinds of scopes are helpful for:
- Quick acquisition, far away kinds of shooting
- Shooting circumstances where computations are very little
- Experienced shooters who recognize their target “hold over” as well as “lead” relationships for their firearm
- Shooters who don’t mind the reticle is enlarged and uses up more visual eyesight space than a SFP reticle
Second Focal Plane Glass
Second focal plane scopes (SFP) feature the reticle behind the magnifying lens. This causes the reticle to remain at the very same overall size in relation to the quantity of magnification being used. The result is that the reticle dimensions alter based upon the zoom applied to shoot over lengthier ranges given that the markings represent different increments which fluctuate with the zoom level. In the FFP example with the SFP glass, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick reticle measurement. These particular varieties of optics are convenient for:
- Far away forms of shooting where shooters have more time to make ballistic computations
- Shooting where most shots happen within shorter distances and ranges
- Shooters who like a clearer optic sight picture with less area taken up by the larger size FFP reticle
Magnification for Scopes
The quantity of zoom a scope provides is figured out by the diameter, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Info About Single Power Lens Rifle Scopes
A single power rifle scope or optic uses a zoom number designator like 4×32. This suggests the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this type of optic can not fluctuate given that it is a fixed power optic.
Variable Power Lens Rifle Glass
Variable power rifle scopes can be modified between magnified settings. The power change is performed by using the power ring part of the scope near the back of the scope by the eye bell.
Power Levels and Range
Here are some recommended scope power settings and the distances where they may be successfully used. Remember that high magnification optics will not be as efficient as lower powered optics due to the fact that too much magnification can be a detractor. The same idea relates to longer ranges where the shooter needs to have increased power to see precisely where to properly aim the rifle.
Optic Lens Covering
All modern rifle scope and optic lenses are layered. Lens finishing is a crucial aspect of a rifle’s setup when looking at high end rifle optics and scope equipment.
About Lens Coatings – HD Versus ED
Some optic suppliers additionally use “HD” or high-def lense coatings that take advantage of various processes, components, rare earth compounds, and polarizations to draw out separate colors and viewable target visibility through the lens. This high-def finish is commonly used with more costly high density lens glass which drops light’s opportunity to refract through the lens glass. Some scope suppliers use “HD” to refer to “ED” meaning extra-low dispersion glass. ED handles how colors are represented on the chroma spectrum and the chromatic aberration or difference which is also called color distortion or fringing. Chromatic aberration can be visible around objects with defined shapes as light hits the object from particular angles.
Single Rifle Scope Lens Finishing Versus Multi-Coating
Various scope lenses can even have different finishes applied to them. All lenses generally have at least some kind of treatment or finish applied to them prior to being used in a rifle scope or optic. Since the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It becomes part of the carefully tuned optic. It requires a coating to be applied to it so that it will be optimally functional in numerous kinds of environments, degrees of sunshine (full light VS shade), and other shooting conditions.
This lens treatment can protect the lens from scratches while lowering glare and other less helpful things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends on the scope manufacturer and how much you paid for it.
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.
Anti-water Lens Finish
Water on a scope lens doesn’t improve keeping a clear sight picture through an optic in any way. Lots of top of the line and high-end scope makers will coat their lenses with a hydrophilic or hydrophobic coating. The Steiner Optics Nano-Protection is a fine example of this type of treatment. It provides protection for the surface of the Steiner scope lens so the water molecules can not bind to it or develop surface tension. The outcome is that the water beads sheet off of the scope to maintain a clear, water free sight picture.
Glass Installing Choices
Installing options 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 mounts which cradle the scope. These various types of mounts also usually can be found in quick release variations which use throw levers which allow rifle operators to quickly install and dismount the glass.
Hex Key Rifle Optic Rings
Standard, clamp style mounting scope rings use hex head screws to mount to the flattop design Picatinny scope mount rails on rifles. These types of scope mounts use two separate rings to support the optic, and are often made from 7075 T6 billet aluminum which are created for long distance accuracy shooting. This type of scope install is excellent for rifles which require a durable, sound mount which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Rifle Scope Rings
These kinds of quick-release rifle scope mounts can be used to quickly detach 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 designed mount. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach solidly to a flat top design Picatinny rail. This permits the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while maintaining accuracy. These types of mounts come in practical for shooting platforms which are moved around a lot, to remove the glass from the rifle for protection, or for scopes which are utilized between several rifles. An example of this mount type is the 30mm mount from the Vortex Optics brand. It usually costs around $250 USD
Sealing and Gas Purging for Scope Tubes
Wetness inside your rifle scope can mess up a day of shooting and your costly optic by triggering fogging and creating residue inside of the scope tube. Most scopes avoid moisture from entering the scope tube with a system of sealing O-rings which are waterproof.
Gas Purged Rifle Optic Tubes
Another element of avoiding the accumulation of moisture inside of the rifle optic’s tube is filling the tube with a gas like nitrogen. Since this area is already occupied by the gas, the optic is less affected by temperature alterations and pressure variations from the outdoor environment which may possibly allow water vapor to leak in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
