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SCOPE QUESTION???

74man
I think I have the scope down but wanted to make sure. I read about a scope which was 6.5-20x44MM, It said FOV @100yds is 16.5 feet at 6.5X and at 20X it would be 5 feet. Ok got that!!! So what is the 44MM? Then other scopes are 50MM. How much difference is there between the 44MM and the 50MM? That is my question. Know it sounds dumb but have always shot open sights and don't know a thing about scopes. I thank you in advance for explaining the difference to me. I will beat you JOKERS to the punch, I know that there is 6MM difference. hahaha.

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Comments

5 comments

Date Votes
  • rimfire72
    The 44mm and 50mm refers to the diameter of the lense (sp?). The larger the diameter,the wider your field of view and the more light thats let into the scope. If you do a lot of hunting at dawn or dusk the larger lense will be a plus.

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  • Snellstrom
    It refers to the exit lense ( big end or objective) size, rimfire 72 you are right on except the size of the objective ( big end) does in no way effect the field of view, it only effects the amount of light allowed in, field of view is a product of the mechanics of the power of the lenses, tube size and distance lenses are apart from each other.
    On another note I have a Leupold 3x9 with a 40mm objective and another with a 50 mm objective and for the life of me I can't tell any discernable difference between them in low light conditions, the 50mm is not giving me any noticeable advantage for the $ spent so I will not spend any additional money for larger objectives. What seems to be far more important is the quality of the glass lenses and the coatings on the lenses which do a lot for superior light transmission. This equals spend more money on good scopes and you will be happier![;)]
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  • ern98
    Another point, the larger the front bell the farther away from the axis of the barrel the axis of the scope has to be. This implies an increased offset to the point of impact ajustments you have to make when sighting in the scope. Many think, as do I, that the closer the scope is mounted to the barrel, smaller bell's help here, the better the intuative shots will be. Yeah there is only a 1/2" difference between a 33mm bell and a 50mm, with rings, but if you're shooting at a small varmint at long range it can be significant. If you have a snap shot at a running deer this is good also. Any which way the scope to eye to cheek weld all have to work together to work properly or else you won't get good results.
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  • notdownorout
    ern98,

    Ya got me thinkin. Now let's see:

    50mm - 33mm = 17mm = .669 making your point of distance above the barrel even more true than what you stated. I have a big problem with the large objective scopes even when using them for bench shooting. I can't seem to position my head down tight enough to the stock to keep eye relief from wandering and causing obscured view through the scope.

    Lower the rings the better, IMHO.
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  • juddroy
    quote:Originally posted by Snellstrom
    On another note I have a Leupold 3x9 with a 40mm objective and another with a 50 mm objective and for the life of me I can't tell any discernable difference between them in low light conditions, the 50mm is not giving me any noticeable advantage for the $ spent so I will not spend any additional money for larger objectives.

    You will not notice any more light with the 50 mm unless you use a 30 mm tube instead of 1"

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