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SS10x42: Good Coyote Glass?

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2004 at 15:06
Dogsdown, Inc. View Drop Down
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I'm currently shooting a fixed 6x Leupold on my Rem. 700 in 6mm. I would like to go to a bit more magnification but shoot a tremendous amount of dogs at night. I'm thinking the 30mm tube will help keep the sight picture nice and bright even though exit pupil is relitively small @ 4.2mm. Also, what type of lens coatings and glass quality are used in the SS series vs. Leupold? Predator calling seems more like tactical type opperations than just about any other type of hunting so I'm thinking the SS series scope should be right in its element. Any thoughts of experience with low-light conditions and predator hunting would be greatly appreciated. Thanks, ~Dogsdown, Inc.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2004 at 15:21
Boomholzer View Drop Down
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I can't comment personally on the low-light performance of the 10x, I will be able to in a few days. 

 

The 30mm tube will offer no advantage in light transmission or low-light performance.

 

A variable-power scope and/or a 50mm OBJ might offer a slight advantage with a larger exit pupil (larger than 4.2mm) depending on your age and the condition of your eyes. 

 

The SS is probably adeqaute but, I don't know how far into dusk you are hunting and at what range.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2004 at 15:30
Dogsdown, Inc. View Drop Down
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How can the 30mm tube not provide better light transmission? A one inch tube is right around 26mm so: that's a 15% (30mm vs. 26mm) increase in diameter and 33% (706.5mm sq. vs. 530.7mm sq.)increase in overall surface area. So, if the inside area of the scope is 33% larger how can there not be an increase in abillity to transfer light to the eye? ~Dogsdown, Inc.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2004 at 15:41
Boomholzer View Drop Down
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Originally posted by Dogsdown, Inc. Dogsdown, Inc. wrote:

How can the 30mm tube not provide better light transmission? A one inch tube is right around 26mm so: that's a 15% (30mm vs. 26mm) increase in diameter and 33% (706.5mm sq. vs. 530.7mm sq.)increase in overall surface area. So, if the inside area of the scope is 33% larger how can there not be an increase in abillity to transfer light to the eye? ~Dogsdown, Inc.

 

The larger tube diameter will allow you a greater adjustment range for elevation and windage.   

 

Once light enternals the internals of a riflescope past the OBJ lens, it "restricts" to the focal point.  Internal lenses have the responsibility of providing a recticle, image inversion, or variable magnification. At these points the light focal is much smaller then the tube and the surface area of these applicable lenses. Changing the light intensity does not make the utilized surface area of these internal lenses any greater.  And therefore providing a greater internal lens surface area does not improve light transmission. It can provide a greater surface area for movement (adjustment range) of the recticle.



Edited by Boomholzer
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/22/2004 at 18:00
Chris Farris View Drop Down
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I'm gonna be referring to this post a lot, I can already tell.  That is a very good explanation.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/22/2004 at 18:13
cheaptrick View Drop Down
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Excellent post Boomholzer. Well done!!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/22/2004 at 22:43
Dogsdown, Inc. View Drop Down
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Well said, it doesn't make a whole lot of sense when you look at the size issue, but I guess you're right. I couldn't figure out why this was untill I tried an experiment using a piece of paper. By rolling the paper into a tubes of different sizes then looking through them I discovered that while the larger tube provided greater field of view and "range for adjustment," it did not provide any greater Light Transmission. I appreciate the explanation, well done. Thank you very much, you've helped greatly.  ~Dogsdown, Inc
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/24/2004 at 11:09
redneckbmxer24 View Drop Down
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for yotes, i think you would be better off with a variable scope between 3-9, and 4-16. a 10X scope on a running yote is going to be an awful tuff shot, and for running yotes, you'll be able to run the magnification down to make running shots, or crank it up to 16X to make that 500 yard shot. a 6-18 also wouldnt be too bad. on my yote rifle (LVSF 223) i use a 4-12x40, and it has proven excellent.

 

cory

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