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one final ? guys, 30 mm or 1 inch tube

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 15:42
darthballs View Drop Down
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you guys were all a great help in me picking my new scope which was a kahles 3x12x56 30mm.   My gun guy tried to talk me out of the 30 mm and into the 1 inch to save some money and told me that there wasnt a difference.   but I told him it wasnt about the money i just wanted the best glass i could get.  am i spending just to spend or is there a  real difference between the two.  i have read that the 30mm tube is far better for low light conditions which was my main concern.  what can u guys tell me.  also, he said it was a much bigger scope but i thought other than the tube being that much bigger that they were basically the same size and weight.  any info would help guys, i'm kind of  a virgin to this high end scope thing

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 15:45
supertool73 View Drop Down
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1 inch vs. 30mm make absolutely no difference in how much light can pass through the scope.  30mm is stronger, but brightness comes from good glass and good coatings.  A Kahles with a 56mm objective is going to be a very bright scope with whatever tube size you choose.  I like the looks of 30mm better myself, especially if you are going with a huge bell like that. 


Edited by supertool73 - February/29/2008 at 15:47
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 15:46
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Read through this thread, a lot of good info and some good links.  Koshkin does an great job with his explanations.  http://www.opticstalk.com/forum_posts.asp?TID=9945&KW=
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 17:04
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Originally posted by supertool73 supertool73 wrote:

1 inch vs. 30mm make absolutely no difference in how much light can pass through the scope.  30mm is stronger, but brightness comes from good glass and good coatings.  A Kahles with a 56mm objective is going to be a very bright scope with whatever tube size you choose.  I like the looks of 30mm better myself, especially if you are going with a huge bell like that. 


+1 on stronger and looks better.

Don't you get increased windage adjustment as well from 30mm tube?



Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 17:14
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30mm and bigger tubes allow for more, if the rest of the design is there, but bigger tubes are especially useful in ffp scopes to gain more range.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 17:25
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My Swarovski  2.5-10x42 is my first 30mm tube purchase and I like the look and balance much better than a scope with a 1" tube.
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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 17:43
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Depending on the specifics of your scope, you might have.  As stated above it does not help with light gathering!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 19:18
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Originally posted by Tip69 Tip69 wrote:

Depending on the specifics of your scope, you might have.  As stated above it does not help with light gathering!


   Well, for that matter, while hunting in "legal" hours that 56mm objective is unnecessary as well. Numbers and the human eye's capability do not lie. Now if you're gonna hunt wild boar in Germany at midnight, I might concede.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/29/2008 at 23:03
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I think I've seen where you get a larger field of view with the 30mm, too.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/01/2008 at 08:33
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The main thing you get with the 30mm tube is more adjustment range with the mechanical parts inside. I greatly prefer the 30 mm tubes and Badger Rings.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/01/2008 at 09:10
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First, what rifle is this scope going on and what purposes are you going to use it for.  That will make a difference as to what you really need.  In general, in a particular manufacturers line, a 30mm scope will be more expensive.  If not needed, I would spend the extra money on better glass, whether with the same manufacturer or another.  Let us know.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/01/2008 at 09:12
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270wsm m700
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