Western big game hunting and recreational shooting Probably some longer-range stuff. Long-range shooting. Mid-range shooting with AR's, AR's or other, similar platforms. Leave your comment.
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Up To Speed On Chronographs. Straight talk on Straight-Walls. I had a fixed 2. I needed more magnification, not to make a yard shot but to see the deer I wanted to shoot.
In those conditions your results likely will be about the same. More magnification does not make you shoot better; it only allows you to see the target better. In fact, once you get past about 12X, more magnification can make you shoot worse unless your rifle is supported by a very solid rest.
This happens because high magnification exacerbates the wobble of the rifle to the point it seems like you cannot hold the rifle steady on the target. Because hunters are continually trying to stretch their reach, the X riflescope has largely supplanted the X. Given our magnification benchmark, either of those scopes should reliably take you out to yards and beyond.
For the majority of big-game hunters, that might be too far. They are big. Big scopes make a rifle heavier, change its balance and are more cumbersome. If you hunt from a shoot-house or blind, that may not matter. If you hunt on your hind legs, it will.
For general big-game hunting, something around the X or X magnification range is still about optimal. What you see when you look through a magnified rifle scope is an image of the real target. In other words, the image you see in your rifle scope appears closer because of the magnification.
When viewed through a riflescope with 3X magnification, your target appears to be three times as close. A target yards away will appear to be only yards distant through a 3X scope. Taking this to an extreme, a 24X scope will make a target that is yards away appear as if it were only about 42 yards away. The more power you have, the more problems you may encounter.
While this sounds like something out of a superhero movie, it is a truth in higher magnification scopes. The more power you invoke with the telescopic magnification of your riflescope, any problems or deficiencies in the scope are also magnified. Some higher power scopes tend to aberrations in the light as it passes through the scope to your eye. These aberrations can include problems with light refraction, which looks a lot like a rainbow in the image of your scope.
The prism effect can cause strange distortions in the image, glinting or color changes in the image, or even blurry effects around the edges of the image that look purple to some people. As the light is bent and refracted in the scope, it becomes more spherical than flat. The point of sharpest focus is near the center of the scope at the crosshairs of the reticle. The higher the magnification, the more pronounced the blurriness can be at the edges of the image in the scope.
The light at the edge needs to travel further than the light at the center of the lens. It also tends to have a different point of focus. Both phenomena affect the focus and clarity of the scope due to spherical aberrations.
Scope manufacturers make a point of advertising the field of view, especially on higher magnification scopes. The field of view is the area around the actual target you can see in the scope at a given magnification.
The field of view decreases proportionally to the magnification. The higher the magnification, the less of the target you can see. Field of view is especially important to hunters who need to track moving game or even take a shot on a moving target at a higher magnification. As magnification increases and the field of view decreases, the ability to hold on or track moving targets gets more difficult.
Higher power magnification requires more light bending capability. More magnification translates into thicker lenses in your rifle scope. Every time light passes through a lens, no matter how high the quality of the glass, some of the light is absorbed.
Magnification does come with trade-offs. There are many optical limitations and types of distortion that are tied to magnification. Chromatic aberration or fringing can occur with any lens, but worsens as magnification increases.
You see the cause of chromatic aberration when you see a rainbow or view light through a prism — different wavelengths of light interact with a raindrop or prism differently. This causes white light to break up into its constituent colors.
The result is that an image viewed through a lens without correction for chromatic aberration can appear blurry or fringed with purple. In scopes with low magnification, field curvature can cause blurriness at the edges of the image. At low magnification, the sharpest focus for the image is closer to a sphere than a plane. Consequently, a target and reticle that are sharp near the center of the image are blurry at the edges of the image.
As magnification increases, spherical aberration may arise. Spherical aberration happens because light is bent more at the edges of a lens than at the center of the lens.
This means that the light from the edges of the lens meets at a slightly different focal point than the light passing through its center. Spherical aberration has the same effect on the image as field curvature — the image may appear blurry at the edges when the center of the image is in focus.
Field of view can be calculated by dividing the diameter of the objective lens by the magnification. As the magnification increases, the field of view will decrease proportionally since the diameter of the objective lens is a fixed number.
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