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#1
10-31-2005, 10:10 AM
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Scopes With No Front Bell
I was looking thru a Weaver V3 (1x3) the other day. I want it for my Ruger M77 RSI becuase it doesn't hit the rear sight. Anyway, it seems that I can see as well as I do with my 3x9x40's. I realize that it's low power and that makes a big difference, but what does the big bell on the front of other scopes really do?
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I cried because I had no shoes, till I met a man who had no feet....so I asked him, "Can I have your shoes? You aren't using them." "Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it." --Mark Twain 
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#2
10-31-2005, 05:33 PM
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Very basically, it collects more light. The higher the scope power, the less light it transmitts. That's why a 3X scope can get by without a large objective lense, but a 9X needs a large one. The proliferation of 50+mm scopes is an outgrowth of this optical fact, allowing even more light on higher power scopes than with smaller objectives.
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#3
10-31-2005, 09:48 PM
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Lone Star is correct.
A very thumbnail generalization is that you'll get optimal light gathering if the front (objective) lens on a scope is 5x the power (magnification). The 20MM objective lens on the Weaver V3 gathers all the light the scope can utilize- a larger objective would add weight and bulk and give no advantage. BTW, the Weaver V3 is a sweet little brush gun scope, and would look very nice on a Ruger RSI. Several fellows I hunt deer with (and myself) have been using the Weaver V3 for years- they hold up very well, and get the job done.
__________________
“May we never confuse honest dissent with disloyal subversion.” Dwight D. Eisenhower "If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter" George Washington Jack@huntchat.com
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#4
11-04-2005, 03:21 PM
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Thanks folks. I just ordered the Weaver for my rifle, they sold the one I was looking at.
I must have been asleep during the physics class that dealt with optics, I have never understood lenses and such.
__________________
I cried because I had no shoes, till I met a man who had no feet....so I asked him, "Can I have your shoes? You aren't using them." "Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it." --Mark Twain
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