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Athlon
Tube size/diameter
30 mm
Rifle scopes series
Athlon Cronus BTR

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Athlon Cronus BTR Rifle Scopes.

Athlon Cronus BTR rifle scopes description

Athlon Cronus BTR (Bright Tactical Reticle) models of rifle scopes are the best rifle scopes curently produced by the company Athlon, and BTR stands for the redesigned and improoved version of them. They are produced from well known Japan manufacturers of high quality rifle scopes.The reticle in the Cronus BTR series of rifle scopes set in the first focal plane (the reticle changes with the magnification). Curently there is one model available, the Cronus BTR 4.5-29x56. The Athlon Cronus BTR has like his predecessor 6 times magnification range, HD – high definition glass, with ˝AFMC˝ (Advanced Fully Multi Coated) lens coatings on inner lenses for better light transmission and contrast. The outer lenses have protective coatings named ˝XPL coating˝ for scratch resistance and for repeling dirt, water and oil off the lenses.

The new model (Athlon Cronus BTR 4,5-29x56) has exposed tactical turrets that are multi turn, the turrets have more tactile clicks, zero stop function for not turning the turret under the zeroed rifle adjustment, 11 illumination brightness settings, parallax adjustment turret with added markings at 300, 500, 800 and 1600 yards, new reticle design, better designed battery compartment and can be ordered only in MIL/MIL configuration (the reticle and the clicks on the turrets are matched.

The Athlon Cronus BTR rifle scopes are made of one piece hammer forged aircraft grade aluminum for extra strength, the tube diameter is 34 mm, and because of that the Cronus BTR has 32 MIL / 110 MOA of elevation adjustment, and 18 MIL / 64 MOA of Windage adjustmet.

Athlon Cronus BTR rifle scopes are waterproof and argon purged for fogproof use at low temperatures, and are a great price / quality product.

Athlon Cronus rifle scopes features

Reliable mechanics in one-piece housing (shockproof even for the most powerful calibers)
Waterproof and argon purged for Fogproof use at low temperatures
First focal plane reticles (reticle size change with magnification)
˝AFMC˝ multi coated lenses for image brightness and contrast
˝XPL˝ coating (for scratch resistance and for repeling dirt, water and oil off the lenses)
Variable magnification (6x zoom ratio)
Adjustable parallax turret
Night time illumination (11 intensity settings)
Big elevation range (3.2 m on 100 meters)
Available in MIL/MIL configurations (1cm/100m)
10 years warranty

Athlon Cronus BTR configurations

Athlon Cronus BTR 4.5-29x56 (for long range target shooting)

Mounting of Athlon Cronus BTR rifle scopes

The Athlon Cronus BTR rifle scopes can only be mounted with 34 mm rings.

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Hunting riflescopes are the most common type of riflescopes. For this reason, this is the biggest category on our website. Even though there are many types of hunting-riflescopes, there are some characteristics that many of them share.

A rifle with optics - hunting riflescope

Mounting solutions - Ring and Rail mounts

Both ring and rail mounting options are available. This is the only category where rail mounting is available, but it is only available with some middle-class and premium scopes. There are four rail mounting standards altogether (the rail option offered depends on the manufacturer):

LM rail (optical devices with this rail are no longer manufactured but mounts for it are still produced)
Zeiss ZM/VM rail
Swarovski SR rail
Schmidt & Bender Convex rail

Schmidt & Bender Polar T96 2.5-10x50 with a S & B Convex rail

Tube diameter

Tube diameters of 30 mm and 25.4 mm are the most common.

Scopes with a 34mm tube are rare – Schmidt & Bender Polar T96 series is one of the few that use it.
Zeiss Victory V8 and Blaser Infinity are equipped with a 36mm tube,
whilst Swarovski dS is equipped with a tube that measures 40 mm in diameter.

It is important to note that tube diameter does not affect the light transmission rate.

Turrets

Riflescope for hunters is equipped with low-profile, capped elevation and windage turrets. After a scope is zeroed (at 100 m), most users won't make any further adjustments to the windage and elevation. For this reason, the turrets are capped to prevent unwanted rotation.

As such optics is commonly used in forests where one can quickly bump the riflescope somewhere, capped turrets are the best way to avoid the unintentional shifts of the point of impact.
Furthermore, these are among the most delicate parts and can break if hit too hard.
Caps are used to prevent that.
With some modern, premium optics, there is an option of purchasing an uncapped, BDC elevation turret which allows the user to quickly compensate for the bullet drop at longer distances by setting the turret to the number for the corresponding distance (1 – 100 m, 2 – 200 m, 3 – 300 m, etc.)

The reticle

Most riflescopes are equipped with a hunting-oriented reticle. Usually, the reticle is a crosshair with thicker lines at the sides and narrower lines towards the center.

There are no holdovers or hash marks because it is meant to be simple to use.
The reticle is mainly in the second focal plane, meaning that it appears to be of the same size regardless of the magnification, providing minimal coverage of the target.
Blaser Infinity with first focal plane reticle configuration is an exception to the rule.

FFP-hunting optics were used in the past but are gradually dying out. Commonly, the riflescope is equipped with an illuminated central dot, the intensity of which depends on its purpose.

Magnification

The magnification is either

fixed or
variable.

A few decades ago, fixed magnification optical devices were the prevalent type, now it is the other way around. In England, Scotland, South Africa, and some other countries, many users still prefer the fixed type over the variable type. Entry and middle-class riflescopes have a 4–6x zoom factor, whereas the premium ones boast a 6–8x zoom factor.

Parallax

Parallax is typically fixed at 100 m.
If magnification is above 12x, a riflescope is usually equipped with an adjustable parallax setting (side focus).

Swarovski Z8i 2.3-18x56 has an adjustable parallax turret (on the left)

Subcategories

There are many subcategories:

Best Hunting-riflescopes

Riflescopes of the highest quality are produced by the renowned European sport optics manufacturers such as:

Such devices are equipped with:

an illuminated reticle,
commonly a fine, central illuminated dot.

The zoom factor is 6x or greater. There is an option of purchasing an uncapped BDC turret on most. Reticles are in the second focal plane, except with the Blaser Infinity series which features an FFP-configuration.

Premium optics boast:

an exceptional field of view,
impressive resolution,
a high light transmission rate, and
a high degree of colour fidelity.

They are difficult to compare because there are only small differences among them, but each series has its own strong point (Leica Magnus series, for example, is known for its incredibly wide field of view).

The middle-class devices are not to be overlooked since its popularity has risen considerably in the last few years.
Most of these devices are made in Japan and highly popular because of their excellent price to performance ratio.
Some European-made devices can also be found in this class.

A short presentation is available here.

Short Presentation | HuntingRiflescopes | Optics Trade from Optics-Trade

Athlon Cronus BTR Rifle Scopes.

Athlon Cronus BTR rifle scopes description

Athlon Cronus rifle scopes features

Athlon Cronus BTR configurations

Mounting of Athlon Cronus BTR rifle scopes

Mounting solutions - Ring and Rail mounts

Tube diameter

Turrets

The reticle

Magnification

Parallax

Subcategories

Best Hunting-riflescopes

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Athlon Cronus BTR Rifle Scopes.

Athlon Cronus BTR rifle scopes description

Athlon Cronus rifle scopes features

Athlon Cronus BTR configurations

Mounting of Athlon Cronus BTR rifle scopes

Mounting solutions - Ring and Rail mounts

Tube diameter

Turrets

The reticle

Magnification

Parallax

Subcategories

Best Hunting-riflescopes

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