Last update on March 23, 2023 // Source: Amazon API
Rifle Scope Product Details
Vortex Optics Crossfire II Adjustable Objective, Second Focal Plane, 30mm Tube Riflescopes
Rifle Scope Product Features
About this item
The 1-4×24 Crossfire II riflescope is one of many configurations in the Crossfire II line. The V-Brite reticle uses the V-Plex format with battery-powered electronics to illuminate the center dot for hunters/shooters during extra-low light conditions.
With long eye relief and an ultra-forgiving eye box, you’ll be able to quickly get a sight picture and acquire your target. The fast focus eyepiece allows quick and easy reticle focusing.
Anti-reflective, fully multi-coated lenses provide bright and clear views for the user.
Capped reset turrets are finger adjustable with MOA clicks that can be reset to zero after sighting in.
A single piece tube constructed from aircraft grade aluminum ensures strength and shockproof performance. O-ring sealed and nitrogen purged, the Crossfire II delivers waterproof and fog proof performance.
About the Vortex Scope Maker
Vortex is a premium manufacturer for weapon scopes, optics, mounts, and other components used for guns like rifles and long guns. They design and manufacture their scopes, mounts, and related products by using materials which are resilient and long lasting. This includes the Vortex Optics Crossfire II Adjustable Objective, Second Focal Plane, 30mm Tube Riflescopes by Vortex. For additional shooting goods, visit their website.
All About Rifle Scopes
Rifle scopes enable you to precisely aim a rifle at different targets by lining up your eye with the target at range. They do this through zoom by utilizing a series of lenses inside the scope. The scope’s alignment can be adapted to account for various natural considerations like wind speed and elevation increases to make up for bullet drop.
The scope’s purpose is to help the shooter understand exactly where the bullet will land based on the sight picture you are seeing with the scope as you align the scope’s crosshair or reticle with the intended target. A lot of contemporary rifle scopes and optics have about eleven parts which are arranged within and externally on the optic. These parts include the rifle scope’s body, lenses, windage dials or turrets, objective focus rings, and other elements. Learn about the eleven parts of rifle optics.
Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The sort of focal plane an optic has decides where the reticle or crosshair lies in relation to the optic’s zoom. It literally means the reticle is situated behind or in front of the magnification lens of the optic. Picking the most beneficial kind of rifle scope is dependent on what sort of shooting you anticipate undertaking.
Info on First Focal Plane Glass
Focal plane scopes (FFP) come with the reticle in front of the magnification lens. This triggers the reticle to increase in size based on the extent of magnification being used. The result is that the reticle measurements are the same at the magnified range as they are at the non magnified distance. As an example, one tick on a mil-dot reticle at one hundred yards with no “zoom” is still the same tick at one hundred yards with 5x “zoom”. These kinds of scopes work for:
- Quick acquisition, far away types of shooting
- Shooting scenarios where estimations are minimal
- Experienced shooters who understand their aim point “hold over” and “lead” relationships for their rifles
- Shooters who don’t mind the reticle is enlarged and occupies more visual sight room than a SFP reticle
About Second Focal Plane Glass
Second focal plane optics (SFP) include the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick.
- Long distance kinds of shooting where shooters have more time to make ballistic estimations
- Shooting where most shots occur within shorter distances and ranges
- Shooters who would like a clearer optic picture with less area used up by the larger sized FFP reticle
Rifle Glass Zoom
The quantity of scope zoom you need on your scope depends on the style of shooting you would like to do. Just about every kind of rifle glass provides some degree of zoom. The volume of zoom a scope gives is established by the dimension, thickness, and curvatures of the lenses within the rifle optic. The magnification of the optic is the “power” of the glass. This signifies what the shooter is observing through the scope is amplified times the power element of what can normally be seen by human eyes.
Fixed Single Power Lens Glass Facts
A single power rifle scope comes with a zoom number designator like 4×32. This implies the zoom power of the scope is 4x power and the objective lens is 32mm. The zoom of this kind of scope can not adjust since it is fixed.
Adjustable Power Lens Rifle Optics
Variable power rifle scopes can be adjusted between magnification levels. It will note the zoom degree in a format such as 2-10×32. These numbers imply the magnification of the scope could be set in between 2x and 10x power. This additionally utilizes the power levels in-between 2 and 10. The power manipulation is accomplished by employing the power ring component of the scope near the back of the scope by the eye bell piece.
Optic Power and Range Correlation
Here are some recommended scope power settings and the distances where they can be successfully used. Highly magnified optics will not be as efficient as lower magnification level optics since too much zoom can be a bad thing. The exact same idea applies to longer distances where the shooter needs to have increased power to see where to properly aim the rifle.
Lens Finish for Glass
All current rifle scope and optic lenses are coated. Lens covering is an essential aspect of a rifle system when looking into high end rifle optics and scope systems.
ED Versus HD Rifle Optics
Some rifle glass manufacturers will also use “HD” or high-def lense finishes that employ various procedures, chemicals, aspects, and polarizations to draw out a wide range of color ranges and viewable target definition through the lens. This HD coating is frequently used with higher density glass which drops light’s capability to refract through the lens glass. Some scope suppliers use “HD” to describe “ED” signifying extra-low dispersion glass. ED deals with how colors are represented on the chroma spectrum and the chromatic difference or aberration which is similarly called color distortion or fringing. Chromatic aberration may be noticeable around objects with hard edges and shapes as light hits the object from specific angles.
Single Finish Versus Multi-Coating for Glass
Various optic lenses can also have different coatings applied to them. All lenses generally have at least some kind of treatment or covering applied to them prior to being used in a rifle scope or optic assembly. This is since the lens isn’t simply a raw piece of glass. It becomes part of the finely tuned optic. It requires a coating to be applied to it so that the lens will be efficiently functional in numerous kinds of environments, degrees of sunlight (full light VS shaded), and other shooting conditions.
This lens treatment can protect the lens from scratches while reducing glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope producers also make it a point to specify if their optic lenses are covered or “multi” coated. This implies the lens has had several treatments applied to them. If a lens receives several treatments, it can establish that a producer is taking numerous actions to fight various natural elements like an anti-glare coating, a scratch resistant anti-abrasion coating, followed by a hydrophilic covering. This additionally doesn’t always mean the multi-coated lens will perform much better than a single coated lens. Being “much better” depends on the producer’s lens treatment innovation and the quality of components used in creating the rifle glass.
Anti-water Lens Covering
Water on an optic’s lens doesn’t improve keeping a clear sight picture through an optic at all. Lots of top of the line or high-end scope manufacturers will coat their lenses with a hydrophilic or hydrophobic coating. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It deals with the surface of the Steiner optic lens so the water particles can not bind to it or create surface tension. The result is that the water beads sheet off of the scope to keep a clear, water free sight picture.
Rifle Scope Mounting Choices
Installing options for scopes come in a few options. There are the standard scope rings which are separately installed to the scope and one-piece scope mounts which cradle the scope. These various kinds of mounts also usually are made in quick release versions which use toss levers which enable rifle operators to rapidly mount and remove the scopes.
Rifle Scope Mounts with Hex Key Rings
Standard, clamp design 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 is developed for long range accuracy shooting. This type of scope mount is great for rifles which require a resilient, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Rifle Optic Ring Mounts
These types of quick-release rifle scope mounts can be used to quickly take off a scope from a rifle and reattach it to a different rifle. If they all use a similar design mount, a number of scopes can often be switched out on the range. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach nicely to a flat top design Picatinny rail. This enables the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while maintaining the original sighting settings. These types of mounts are useful and practical for shooting platforms which are moved a lot, to remove the glass from the rifle for protection, or for sight systems which are employed in between several rifles. An example of this mount type is the 30mm mount from the Vortex Optics brand. It generally costs around $250 USD
Sealing and Gas Purging for Glass Tubes
Moisture inside your rifle scope can spoil a day on the range and your pricey optic by inducing fogging and making residue within the scope tube. The majority of optics prevent moisture from going into the optical tube with a system of sealing O-rings which are water resistant. Typically, these water-resistant scopes can be submerged within 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be ample moisture avoidance for basic use rifles for hunting and sporting purposes, unless you plan on taking your rifle aboard watercrafts and are worried about the optic still working if it is submerged in water and you can still retrieve the firearm.
Optic Gas Purging
Another component of avoiding the accumulation of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Since this area is currently taken up by the gas, the glass is less affected by temperature level shifts and pressure variations from the external environment which may possibly allow 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.