Description
Rifle Scope Product Details
6-18X40mm, 30/30 Duplex Reticle, Side Parallax, Black, 6-18x40mm
Hot Scope! The zoom ring has an inner drum with markings, and a fixed inner ring with a window cutout. Only the outer ring and markings will turn when adjusted. The window is always facing the shooter
Rifle Scope Product Features
Calibrated for the . 17 HMR
Adjustable Parallax
Includes 17gr turret drums
The zoom ring has an inner drum with markings, and a fixed inner ring with a window cutout
Durable and long lasting
Sport type: Hunting
BSA Optics Sweet 17 SP 6-18 X 40mm Side Parallax Rifle Scope .17 HMR
Specifically designed for the .17 HMR, with adjustable parallax / focus
The BSA Sweet .17 SP Rifle Scope is specifically designed for the .17HMR. This series features side parallax adjustment from 10 yds to infinity, fully multicoated lenses, 3″ sunshade and fast focus. The Sweet 17 SP features an elevation multi-grain turret ballistically calibrated for a 17gr and 20gr cartridges. Matte black finish. Waterproof, Shockproof and Fogproof
For varmint and target shooters
Magnification low: 6; Magnification high: 18
Objective lens diameter: 40 mm
Adjustment MOA: 1/4
Lens Material: Glass; Lens: Fully Multi-Coated
W/E Range: 35; Eye Relief: 4 inches
FOV LOW @ 100′ (ft): 18.8; FOV HIGH @ 100′ (ft): 6.2
PARALLAX SETTING (yds): 10 to Inf.
Reticle: 30/30
Shockproof, Fogproof, Waterproof
Tube diameter: 1″, one piece; Aluminum Construction
Specification
Magnification low: 6; Magnification high: 18; Objective lens diameter: 40 mm
30/30 Duplex Reticle
1 piece aluminum construction, 1 inch tube
Glass lens material, fully multi-coated
Multi-Grain Turret and Side Parallax
Shockproof, Fogproof, Waterproof
19.90 oz weight; 13.20 in length.
S17-618X40SP Sweet 17 6-18 x 40 Side Focus / Parallax
Adjustable parallax to perfectly calibrate your shots down range. Specifically calibrated for the .17 HMR bullet so you’re guaranteed optimal performance for your ammunition
BSA Optics Sweet 17 AO 3-12 X 40mm Rifle Scope .17 HMR BSA Optics Sweet 17 AO 3-9 X 40mm Rifle Scope .17 HMR BSA Optics Sweet 17 SP 6-18 X 40 Rifle Scope .17 HMR BSA Optics Sweet 17 SP 3-12 X 40 RGB .17 HMR (red, green, blue illuminated) BSA Optics Sweet 17 SP 3-12 X 40 Rifle Scope .17 HMR
Magnification 3-12 3-9 6-18 3-12 3-12
Objctive Diameter 40 mm 40 mm 40 mm 40 mm 40 mm
Side Parallax N/A N/A
Lenses Fully Coated Glass Fully Coated Glass Fully Multi-Coated Glass Fully Multi-Coated Glass Fully Multi-Coated Glass
One Piece Aluminum Construction
Shockproof, Fogproof, Waterproof
2 piece Dovetail mounts included N/A N/A N/A
30/30 Duplex Reticle
Length 12.90 in 12.12 in 13.2 in 13.00 in 12.6 in
Weight 22.70 oz 22.30 oz 19.90 oz 20.60 oz 19.9 in
About the BSA Optics Manufacturer
BSA Optics is a premium supplier for weapon scopes, optics, mounting solutions, and other components used for firearms like rifles and long guns. They style and manufacture their scopes and related products making the most of building materials which are resilient and long lasting. This includes the 6-18X40mm, 30/30 Duplex Reticle, Side Parallax, Black, 6-18x40mm by BSA Optics. For more shooting products, visit their site.
Rifle Optic Information
Rifle scopes permit you to specifically align a rifle at different targets by aligning your eye with the target at range. They accomplish this through zoom by using a series of lenses within the scope. The scope’s positioning can be dialed in to take into account varied environmental elements like wind speed and elevation decreases to make up for bullet drop.
The scope’s purpose is to understand exactly where the bullet will hit based upon the sight picture you are viewing through the optic as you align the scope’s crosshair or reticle with the intended point of impact. A lot of modern rifle scopes and optics have about 11 parts which are arranged within and outside of the optic. These scope parts consist of the rifle scope’s body, lenses, windage and elevation turrets, focus rings, and other parts. See all eleven parts of a rifle optical system.
The Styles of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The type of focal plane a scope has determines where the reticle or crosshair is located in regard to the optic’s zoom. It simply implies the reticle is situated behind or ahead of the magnifying lens of the optic. Choosing the best type of rifle glass is based upon what type of shooting you intend on doing.
First Focal Plane Glass Facts
First focal plane glass (FFP) include the reticle ahead of the zoom lens. This triggers the reticle to increase in size based upon the level of magnification being used. The benefit is that the reticle measurements are the same at the enhanced distance as they are at the non amplified distance. As an example, one tick on a mil-dot reticle at one hundred yards without “zoom” is still the exact same tick at 100 yards using 5x “zoom”. These kinds of scopes work for:
- Quick acquisition, far away kinds of shooting
- Shooting circumstances where computations are low
- Experienced shooters who have an idea for their target “hold over” as well as “lead” relationships for their firearms
- Shooters who don’t mind the reticle is bigger and requires more visual eyesight space than a SFP reticle
Second Focal Plane Scope Details
Second focal plane scopes (SFP) come with the reticle to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick measurement.
- Long distance styles of shooting where shooters have more time to make ballistic calculations
- Shooting where most shots take place within shorter ranges and spaces
- Shooters who prefer a clearer optic sight picture without area taken up by the enlarged FFP reticle
About Rifle Scope Zoom
The quantity of zoom a scope provides is determined by the size, thickness, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Fixed Single Power Lens Rifle Glass
A single power rifle scope and optic comes with a zoom number designator like 4×32. This indicates the zoom power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of scope can not change since it is set from the factory.
Adjustable Power Lens Rifle Optic Info
Variable power rifle scopes can be adjusted between magnification levels. These types of scopes will list the magnification level in a format like 2-10×32. These numbers mean the magnification of the scope can be adjusted in between 2x and 10x power. This additionally involves the power levels in-between 2 and 10. The power manipulation is achieved by applying the power ring component of the scope near the back of the scope by the eye bell piece.
Power Levels and Range Correlations
Here are some advised scope power levels and the distances where they can be efficiently used. Bear in mind that higher magnification scopes and optics will not be as efficient as lower magnification level scope and optics due to the fact that increased zoom can be a negative thing in certain situations. The same idea applies to longer ranges where the shooter needs to have adequate power to see where to best aim the rifle at the target.
Glass Lens Finish
All modern-day rifle optic and scope lenses are layered. Lens coating can be a significant aspect of a rifle system when looking into high end rifle optics and scope equipment.
About Lens Coatings – HD Versus ED
Some scope brands also use “HD” or high-definition lens coatings which use various techniques, polarizations, chemicals, and elements to draw out various colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Optic Lens Finishing Versus Multi-Coating
Various optic lenses can also have various finishings used to them. All lenses typically have at least some type of treatment or covering used to them before being used in a rifle scope or optic.
Single covered lenses have a treatment applied to them which is generally a protective and improving multi-purpose treatment. This lens treatment can protect the lens from scratches while minimizing 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 money you spent paying for it. Both the manufacturer and amount are signs of the lens quality.
Some scope manufacturers similarly make it a point to specify if their optic lenses are coated or “multi” coated. Being “better” depends on the producer’s lens treatment technology and the quality of products used in developing the rifle scope.
Hydrophobic Finishing for Rifle Scopes
Water on a lens doesn’t assist with keeping a clear sight picture through a scope at all. Numerous top of the line and high-end optic companies will coat their lenses with a hydrophobic or hydrophilic anti-water finish.
Alternatives for Installing Rifle Optics on Long Guns
Installing solutions for scopes can be found in a few options. There are the basic scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These various types of mounts also generally can be found in quick release variations which use throw levers which allow rifle operators to quickly mount and remove the scopes.
Hex Key Glass Rings
Standard, clamp design mounting scope rings use hex head screws to mount to the flattop style Picatinny scope installation 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 created for long distance accuracy shooting. This type of scope install is great for rifles which require a long lasting, sound mount which will not move no matter how much the scope is moved or abused.
Quick-Release Cantilever Scope Ring Mounts
These types of quick-release rifle scope mounts can be used to quickly detach a scope and connect it to a different rifle. Multiple scopes can also be swapped out if they all use a compatible design mount. These types of mounts come in handy for rifle platforms which are transported a lot, to remove the optic from the rifle for protecting the scope, or for scopes which are used between several rifles.
Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle optic can destroy a day of shooting and your costly optic by triggering fogging and producing residue inside of the scope tube. The majority of scopes prevent moisture from getting in the scope tube with a system of sealing O-rings which are waterproof.
Scope Gas Purging
Another component of preventing the accumulation of moisture within the rifle scope’s tube is filling the tube with a gas like nitrogen. Because this area is currently occupied by the gas, the scope is less altered by temperature level shifts and pressure variations from the outside environment which might possibly permit water vapor to seep in around the seals to fill the void which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
