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Good reading A BREAKDOWN OF THE RELATIONSHIP BETWEEN RIFLE SCOPE MAGNIFICATION VS. DISTANCE The relationship between rifle scope magnification vs. distance is relatively straightforward once rifle scope magnification is explained. The first step to explaining rifle scope magnification is understanding how to read rifle scope magnification from a scope’s specification. A rifle scope specification includes two numbers. The first number identifies the magnification while the second number identifies the diameter of the objective lens. Thus, a specification of 8.5×50 describes a scope with 8.5× magnification and an objective lens that is 50 mm in diameter. Variable magnification scopes have a specification that describes the range of magnifications provided by the scope. RIFLE SCOPE MAGNIFICATION EXPLAINED The magnification is a physical property of the scope. That is, it is defined by the thickness, curvature, diameter, and material of the lenses and their coatings. Once the physical properties of the lenses and their coatings are known, a set of equations defines the optical properties of those lenses. The lenses inside a scope perform three primary purposes. Magnify the target: The objective lens captures light reflected from the target and bends the light to create a magnified image of the target. Some scopes use multiple lenses to magnify the target. Invert the magnified image: The image generated by the objective lens is inverted. An erector assembly contains two lenses that flip the image so that it is right-side-up. The erector assembly can also contain the additional magnifying lenses for a variable magnification scope. Focus the image: The ocular lens focuses the image that has been magnified and flipped right-side up for your eye. The diameter of the ocular lens also determines the eye relief – the distance between the scope and your eye from which you can see the full, focused image. THE MAGNIFICATION EQUATION DETERMINES THE SIZE AND DISTANCE OF THE MAGNIFIED IMAGE The image viewed through the ocular lens is just that – an image. It is, in this respect, a reflection of reality rather than reality itself. The relationship between the image and the target is linear and proportional. Specifically, the magnification defines the ratio between the focal length of the ocular lens and the focal length of the objective lens. In application, this means that the magnification tells you how the image will differ from the target. A target viewed through a 3× magnification scope will appear to be three times closer than its actual distance – targets at 300 yards will appear as if they were 100 yards away. As the magnification increases, the apparent distance to the image decreases in direct proportion. Thus, doubling the magnification from 3× to 6× will cause the target’s image to appear half as far away. As a corollary to this equation, the height of the target will also increase in proportion to an increase in magnification. This means that a doubling of magnification from 3× to 6× will not only halve the apparent distance to the target but also double its apparent size. PHYSICAL LIMITATIONS OF MAGNIFYING LENSES Magnification does come with trade-offs. There are many optical limitations and types of distortion that are tied to magnification. 1. CHROMATIC ABERRATION 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. 2. FIELD CURVATURE 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. 3. SPHERICAL ABERRATION 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. 4. FIELD OF VIEW 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. This means that less area will be visible as magnification increases. 5. DIMNESS As lenses thicken, or more lenses are included in the scope, more light will be reflected and absorbed rather than transmitted. Even coated lenses will transmit less than 100% of the light incident on the lens. As a result, higher magnification scopes will produce dimmer images than lower magnification scopes. MAKING A CHOICE – RIFLE SCOPE MAGNIFICATION VS. DISTANCE There is a saying that you should choose the magnification that is just enough for you to hit the target. In other words, too much magnification brings in drawbacks, such as weight, complexity, and distortion, that produces diminishing returns for the rifle scope. In fact, many shooters find that they need no more than 10× magnification for targets up to 500 yards away. Many hunters settle on magnification between 4× and 6× since most shots taken during deer hunting season will fall between 100 and 200 yards. On the other hand, shots taken at longer ranges, shots at smaller targets, or shots from more powerful rifles may call for higher magnification. Smaller targets, particularly stationary targets in precision rifle shooting competitions, will be less subject to losses in field of view and less subject to distortion.

Any one try these , I picked up a couple boxes as they were cheap . Don't plan on shooting them in my dad's Parker double barrel. I'll try them out in modern shotguns.

Me no , not now sorry

I've had luck with Apple at the house just have to get them before the deer do

I just want one of my squares to win

I wasn't going to mention that but I agree . Doesn't sit well with me .

Should not have gone for 2

My jets lost 35 to 9 to KC this doesn't make me feel that bad now

I bet I'm the only guy to get pulled over on thru way at x33 on way to camp on Friday and then the same trooper at x33 on way home Sunday. That was back when it was 55mph. I got nailed doing 63 and 62 each time . Had to be early 90s

Still the same old crud ring . I think I had my best luck with the Remington clean bore but the crud ring was still there.

Wasn't it originally a marketing ploy to eliminate the crud ring caused by using t7.

If that passes it would be huge for our 2nd ammendment rights . There is an article in latest NY outdoor news too. https://www.congress.gov/bill/116th-congress/house-bill/38

Does it say if it would be allowed in bow only mdus?

I think he died in over ten movies . My favorite sons of Katie elder “I have tried to live my life so that my family would love me and my friends respect me. The others can do whatever the hell they please.” – John Wayne

The Duke , but man grand torino was good

I disagree with " sportsman " buying ammo if they have enough. What constitutes enough ,let's use common sense here . We all try to encourage new shooters and hunters alike, to be hoarding ammo is discouraging said hunter's and shooters alike .

I'll agree to dis agree ...... Shoot straight and shoot often ...

I have bought 2 or 3 boxes at a time over the last 30 years of my life . I too have plenty for all guns and hand guns . That is exactly why I am not buying during the current price hike . But we as sportsman are . I dont know how much you , Tom , Dick or Harry need . My point is if you have enough don't buy more . That's whats driving the cost up.. You live in Saratoga Co if I recall or there abouts. I'm in latham neither of which are high crime . Heck one day maybe we can go shooting at the gun club.

Its we as sportsman who are creating this . We all just need to sit back some . I know it stinks to say it . If you need a 1000 rounds of 9mm to shoot the guy trying to break in your house you need more practice. If you think your going to the range and blowing off 500rds of 9mm then going to store to replace its not happening. Hoping things settle down by spring but I have my doubts

To everyone that's thinks covid and the vaccine is BS ,lose a family member to covid than come talk to me .

My 72 year old mom had a heart attack Thursday caused by the covid virus attacking her heart . She is 95lbs soaking wet ,walks 6 miles a day 3 in morning 3 at night with my dad who only has a lung and a half . She fought the fight with medical help and is coming home today . My dad moved in with us and is in lock down until his test results come it . Postive he goes home negative he stays until lock down over As I said before that vaccine can't come soon enough Fu covid don't F with my family

I've lost an uncle this week to covid ,my wife was sick for two weeks ,my daughter one day ,now my mom is in hospital after covid caused her to have a heart attack. That vaccine can't come soon enough for my family

Just won't find ammo until 2025...

By the intended tool for intended use. Snow blowers are meant for intended use ,atv with plow is not. My wife wanted to buy me a plow for my 2015 sportsman 570,I said the snow blower much better buy me a gun instead.

40 bucks a box for 9mm l will not pay that. Guess I will just have to shoot wisely