The use of a magnified archery scope is, for all practical purposes, the domain of the target archer using a compound bow as they aren't allowed in most recurve rounds (probably because they simply don't work very well on recurve target bows). They also are not allowed on compound bows in many bowhunter rounds, so it is important to check with your club officials before you buy one if there is any question of scopes being legal
.The question of scope magnification (or diopter--see the NZAP Quick Tip below if you really want to know the difference) is strictly a matter of personal preference. Generally, archers shooting the indoor rounds will want a higher magnification that those shooting outdoor rounds but there are no hard and fast rules here. However, if you have never used a scope before, you do well to avoid the higher magnifications and stick with a 4X (.5 diopter) or lower. The effective use of a scope requires some practice and trying to use one with excessive magnification can be frustrating and counterproductive.
The Cartel 207 Target Scope is the best value you will find anywhere and a very high-quality scope for a moderate price. The sturdy 1 1/4 Inch (32mm ) aluminium housing contain a removable lens, a level, and a standard stainless steel 10/32" thread. Easily converts from right hand to left hand use.
We have the Cartel 207 Target Scope in stock in 2X and 4X. The Cartel 207 comes with a clear lens so you will need the Circles and Dots set listed below.
The Cartel 306 is another great value in a target Scope. This one features a 1 1/4 inch (32mm) sight window protected by a sturdy but lightweight black-anodised aluminium housing and a standard 10/32 stainless-steel mounting rod. The high-quality lens has an "up" post with a fiber-optic pin and a level.
At NZAP we have the Cartel 306 in 4X and 6X magnification.
The Cartel Triple 406 target Scope is similar to the Cartel 306 above but with a sturdier housing and an anti-reflective coating on the lens. The 406 features a 1 1/4 inch (32mm) sight window protected by a sturdy but lightweight black-anodised aluminium housing and a standard 10/32 stainless-steel mounting rod. The high-quality anti-reflective lens has an "up" post with a fiber-optic pin and a level.
NZAP have the Cartel Triple 406 in 4X and 6X magnification.
The Cartel Triple 406 target Scope is similar to the Cartel 306 above but with a sturdier housing and an anti-reflective coating on the lens. The 406 features a 1 1/4 inch (32mm) sight window protected by a sturdy but lightweight black-anodised aluminium housing and a standard 10/32 stainless-steel mounting rod.
The high-quality anti-reflective lens is clear and is drilled for a fiber-optic pin (included) and with a level.
NZAP have the Cartel X Pert in 406 in 4X and 6X magnification.
This top-quality machined-aluminum aperture features an up post that will accept a tapered fibre-optic pin, which is included. It is available with a 10/32 thread rod for target sights on compound bows and higher poundage recurves, or an 8/32 pin size for us on target sights used with lighter recurve bows. If you are unsure of the thread size you need, check with the manufacturer's specs for your sight or give us a ring.
Here is a durable aperture that can be used for informal target shooting or both 3-D and bowhunting. The Bright Ring sight aperture features a light-gathering aiming dot suspended within a clear 1 1/2" diameter housing for maximum use of available light, and a fibre-optic pin is centred in a set of clear-plastic cross hairs.
The steel mounting stud is available in 8-32 for most target sights recurve bows and 10-32 thread size for sights on field bows and on compound target bows. This is a good choice for informal target shooting or as a backup aperture for your expensive target scope.
At NZAP, we often get questions about target scope magnification as it is sometimes expressed in diopters and sometime as X power. Unfortunately there isn't really any way to translate one into the other with any accuracy because the magnification and the diopter of a lens are two different things.
The diopter of an archery target scope is simply the focal length of the scope divided into one meter. To find the focal length of a scope, focus the sun's rays through the lens onto a piece of paper then measure the distance between the paper and the lens; that's the focal length. (take care not to burn your fingers) To find the diopter, divide that figure into one. Thus if your scope focuses sunlight to a fine point when it is 2m away from the paper you divide 2 into 1 to get a diopter of .5.
Most scope manufacturers use a semi-standardised and very misleading scale of diopter (d) to magnification (X) of .25d=2X, .50d=4X, .75d=6X and 1d=8X. Unfortunately, these ratios have only a vague relationship to actual magnification, which is a bit more complicated because it depends on the distance of the scope from your eye. The actual magnification is determined by multiplying the distance of the lens from the eye by the diopter, subtracting the result from one, then dividing that result back into one. Thus if your .5 diopter 4X lens is 800mm away from your eye when you are at full draw, the distance times the diopter would be .8 X .5 =.4. When .4 is subtracted from one you get .6 , and when .6 is divided into 1 you end up with an actual magnification of only about 1.66X, which (it goes without saying) is a lot less that 4X. If an archer with short arms used that same .5 diopter lens on a target sight without an extension so that the lens was only 700mm from the eye, the result would be a magnification closer to 1.5X. Now if a long lanky lad were to shoot with the same scope 900mm from his eye, the magnification would be around 1.8X.
You're right! Scope magnification is complicated. Just remember that the magnification rating of an archery target scope is not the same as the magnification rating of a pair of binoculars and that the archer with a short draw length using no sight extension is going to need more magnification to get the same results as a shooter with a long draw length and a long sight extension.