Description
Last update on February 7, 2023 // Source: Amazon API
Rifle Scope Product Details
TufForce SF39-40AIM – 3-9X40 Full Size Scope
1) 3-9X40 Full Size Scope with Adjustable Objective 2) Red and Green Illuminated Mil-Dot Reticle 3) Premium One Piece Metal Tube 4) 3″ Sun Shade and Lens Cover Included
Rifle Scope Product Features
3-9X40 Full Size Scope with Adjustable
Red and Green Illuminated Mil-Dot Reticle
About the TufForce Company
TufForce is a premium manufacturer for long gun scopes, optics, mounts, and other components used for guns like rifles and long guns. They create and manufacture their scopes and related products by making the most of elements which are durable and long lasting. This includes the TufForce SF39-40AIM – 3-9X40 Full Size Scope by TufForce. For additional shooting products, visit their site.
Rifle Glass Facts
Rifle scopes allow you to specifically align a rifle at different targets by lining up your eye with the target over a range. They accomplish this through magnification by utilizing a set of lenses within the scope. The scope’s positioning can be adapted to take into account different natural aspects like wind speed and elevation to make up for bullet drop.
The scope’s function is to help shooters understand precisely where the bullet will hit based on the sight picture you are viewing via the scope as you align the scope’s crosshair or reticle with the target. Most modern-day rifle optics have around 11 parts which are arranged within and on the exterior of the scope body. These optic pieces include the rifle scope’s body, lenses, windage and elevation turrets, objective focus rings, and other components. Learn about the eleven parts of scopes.
About Rifle Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding upon the finest type of rifle glass is based around what type of shooting you plan on doing.
First Focal Plane Scopes
First focal plane optics (FFP) come with the reticle in front of the magnification lens. This triggers the reticle to increase in size based upon the level of magnification being used. The result is that the reticle measurements are the same at the magnified distance 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 exact same tick at 100 yards using 5x “zoom”. These types of scopes work for:
- Quick acquisition, far away types of shooting
- Shooting situations where computations are minimal
- Experienced shooters who recognize their aim point “hold over” and “lead” correlations for their rifles
- Shooters who do not mind the reticle is bigger and requires more visual sight space than a SFP reticle
About Second Focal Plane Scopes
Second focal plane glass (SFP) come with the reticle behind the zoom lens. This triggers the reticle to stay at the same size in connection with the amount of zoom being used. The outcome is that the reticle dimensions change based upon the zoom applied to shoot over longer distances considering that the markings present distinct increments which fluctuate with the magnification level. In the FFP example with the SFP glass, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick reticle measurement. These sorts of glass work for:
- Far away types of shooting where shooters have increased time to make ballistic calculations
- Shooting where most shots take place within much shorter proximities and ranges
- Shooters who would like a clearer optic picture without area used up by the enlarged FFP reticle
About Rifle Optic Magnification
The measure of scope zoom you need on your optic is based on the kind of shooting you like to do. Virtually every type of rifle optic offers some level of magnification. The level of zoom a scope delivers is determined by the dimension, density, and curves of the lenses inside of the rifle scope. The magnification level of the scope is the “power” of the glass. This signifies what the shooter is aiming at through the scope is magnified times the power factor of what can generally be seen by human eyes.
Fixed Power Lens Scopes
A single power rifle optic or scope comes with a zoom number designator like 4×32. This means the magnification power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of optic can not fluctuate because it is fixed.
Variable Power Lens Scope Info
Variable power rifle scopes use variable power levels. The power change is handled using the power ring part of the scope near the back of the scope by the eye bell.
Glass Power and Ranges
Here are some suggested scope powers and the ranges where they could be effectively used. Always remember that higher magnification glass will not be as practical as lower magnification level glass because excessive magnification can be a negative thing in certain situations. The very same idea goes for extended distances where the shooter needs to have increased power to see where to properly aim the rifle.
Info on Lens Coatings
All top teir rifle glass lenses are layered. Lens finishing is an essential element of a rifle when buying high end rifle optics and scope equipment.
HD Versus ED Lens Coatings
Some scope makers likewise use “HD” or high-definition lens finishings which use different processes, polarizations, components, and chemicals to draw out various colors and viewable quality through the lens. Some scope makers use “HD” to refer to “ED” implying extra-low dispersion glass.
Scope Lens Single Finish Versus Multi-Coating
Various optic lenses can even have different finishings 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. Due to the fact that the lens isn’t simply a raw piece of glass, they require performance enhancing coatings. It becomes part of the finely tuned optic. It requires a coating to be applied to it so that it will be efficiently usable in many kinds of environments, degrees of sunshine (full light VS shade), and other shooting conditions.
Single layered lenses have a treatment applied to them which is normally a protective and enhancing 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 coated lens depends upon the scope designer and the amount you paid for it. Both the make and cost are signs of the lens quality.
Some scope makers likewise make it a point to define if their optic lenses are coated or “multi” covered. This implies the lens has numerous treatments applied to them. If a lens gets multiple treatments, it can indicate that a producer is taking multiple actions to fight various natural factors like an anti-glare coating, a scratch resistant anti-abrasion covering, followed by a hydrophilic coating. This also doesn’t necessarily suggest the multi-coated lens is better than a single layered lens. Being “much better” is dependent on the producer’s lens treatment innovation and the quality of components used in developing the rifle optic.
Scope Lens Hydrophobic Finish
Water on a lens doesn’t help with keeping a clear sight picture through a scope at all. Many top of the line and military grade scope companies will coat their lenses with a hydrophobic or hydrophilic anti-water finish.
Glass Installing Options
Mounting solutions for scopes come in a few choices. There are the standard scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These various types of mounts also typically come in quick release variations which use throw levers which permit rifle shooters to rapidly mount and remove the glass.
Hex Key Rifle Scope Ring Mounts
Standard, clamp style 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 separate rings to support the optic, and are often made from 7075 T6 billet aluminum which are designed for long range precision shooting. This type of scope install is perfect for rifles which need a long lasting, sound mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Optic Ring Mounting Solutions
These types of quick-release rifle scope mounts can be used to quickly attach and remove a scope from a rifle before reattaching it to a different rifle. Multiple scopes can even be switched out if they all use a similar design mount. These types of mounts come in handy for long guns which are carried a lot, to remove the optic from the rifle for protection, or for optics which are used in between numerous rifles.
Sealing and Gas Purging for Rifle Optic Tubes
Wetness inside your rifle scope can ruin a day of shooting and your highly-priced optic by inducing fogging and making residue inside of the scope tube. Most scopes protect against wetness from entering the optical tube with a system of sealing O-rings which are waterproof. Normally, these water-resistant scopes can be immersed under 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be more than enough wetness avoidance for common use rifles for hunting and sporting purposes, unless you plan on taking your rifle on your motorboat and are concerned about the optic still performing if it goes overboard and you can still rescue the gun.
Info on Scope Tube Gas Purging
Another component of preventing the buildup of wetness within the rifle optic tube is filling the tube with a gas like nitrogen. Since this space is currently taken up by the gas, the scope is less impacted by climate shifts and pressure differences from the external environment which may potentially enable water vapor to leak in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a good rifle scope to look for.
