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Evaluating a scope criteria?

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 08:52
HRstretch View Drop Down
Optics GrassHopper
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I was wondering if the wise and all knowing experts on this site could give a sample list of criteria and means and methods to judge a new scope by.

I have a new scope and would like to know what i need to look at for a general evaluation.
This scope is a multi-coated 6X25X56 front/AO rear focus with 1/8 adjustments and mill dot reticle

I know that I have to be positioned just right to see through it but how should I view the glass? What should the edge of field of vision be like?  I think I understand about tracking for adjustments, Zero gun, adjust for 4" up 4" over, shoot three rounds, adjust back to zero and shoot three rounds to see if scope tracks, this is with aiming at the center of target each time?  Does this sound right?  Is there some standards I should follow for true evaluation?










Edited by HRstretch
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 12:01
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I'd say that you should have done more homework before making the selection, let me guess it says (made in China).

 

Shoot a box:   Zero at 100 yds then go 4moa right shoot one then go 4moa up (4inches) shoot one then go 4moa left shoot one then go 4moa down and shoot one which should take you back to your initial zero. But chances are that you wont know what it is doing because the rifle and the shooter have to both be up to the level of accuracy needed before the scope makes any difference at all. Now if you can keep every shot in a one inch group at 100 yds then jump in and try the box test but if one shot it a couple of inches off one direction and the next is a couple of inches off another direction with no scope adjustment chance is that it is either the gun or the shooter because most scopes even a $30 tasco once zeroed, if left alone will shoot in the same place provided you use even fair quality rings and base.  Now to complicate matters you have to use the same ammo to be consistent not just the same weight bullet but the same brand and hopefully the same lot of ammo.



Edited by Urimaginaryfrnd
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 17:39
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Optics GrassHopper
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It amazes me that your first assumption is that I did not research my purchase.  I do not see how you arrived at that deduction from the first post? The second assumption is that you deducted that myself and my equipment are not capable of shooting sub MOA, again I do not see how you deducted that from my first post?  I did a lot of research and I am capable, as well as, my guns of shooting sub MOA out to 300 yards.  My guns shoot between .5 to .75 at 100 yards, if you must know, and that is with multiple loads and bullet design.

I do however appreciate the description of the box test, I am doing this at 200 yards and will adjust MOA accordingly.

No comment from you about the technical aspect of the operations of a scope?  Or are all you capable is just China bashing crap that don't help those that want to learn more about the equipment we use?  Please enlighten me on why my scope, that by the way, was made in China is not up to YOUR standard, never mind what MY standard might be?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 18:51
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HRstretch, which particular scope do you have?   Make and model?

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 18:59
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I recently purchased a Burris Sig 4-14x44 and had a piece of debris on one of the internal lenses.    Found it by looking through the objective.

Would like to see this message get some responses to include an inspection check list for optics.    Something you would do before you purchase or mount a new scope.

 

HRstretch, like you, I don't particularly appreciate arrogance toward any class of scope/buyer.  I don't think it serves this board well.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 19:24
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Optics GrassHopper
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Originally posted by koshkin koshkin wrote:

HRstretch, which particular scope do you have?   Make and model?

ILya


I was just wanting an unbiased criteria as to the way one would go about evaluating a scope, so that myself and others would have a guideline to go by.

My scope, that I just purchased, is a Millet 6X25X56mm Buck Gold A/O mildot reticle 30mm tube with a matt finish Model # BK 30726.  I myself think it will be a good scope for my new Savage 112 FVSS 7MM STW. 

I was wanting to give an honest review and would like to include useful information.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 19:34
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Generally, the best way to review a scope is to compare to some well known scope.  There are many things to look for: clarity, sharpness, resolution (centerfield and close to the edges), eye position flexibility, W/E adjustment accuracy and repeatability, parallax adjustment repeatability, etc.

Optical qualities are hard to quantify without access to proper equipment, hence it is useful to compare it to a couple of other scopes side by side.

I am not sure what the intended use for the rifle is, but it seems like a lot of magnification for the caliber.  Typically, a scope with this high of a magnification would suit a varminter or a benchgun best.  Also, good optical quality is harder to achieve with high magnification than with low magnification.  When purchasing a reasonably inexpensive scope, it is typically a good idea to stay with magnifications that do not go as high.

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 20:48
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nobody works here, if you get your toes stepped on thats tough sh*t. if you want a question answered be specific don't dance around.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 21:04
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How much more specific should I be.  How did this comment help this thread?  What is it that you think you contributed to this subject?

Originally posted by Dale Clifford Dale Clifford wrote:

nobody works here, if you get your toes stepped on thats tough sh*t. if you want a question answered be specific don't dance around.


And Koskin thanks for an intelligent thoughtful response.


Edited by HRstretch
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/06/2007 at 21:22
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there is no list, only comparisons, it is not a science. is the question specific??  everybody on the internet shoots submoa groups. beside if yu are shooting these types of groups then you already know more about scopes than your posts suggest, or you couldn't be doing it.

If you want to evaluate the scope use the thing and then write how it compared to something else you have used and it sounds already familar with. whether the scope is up or not up to your standards is a testimonial not an evaluation. I have no knowledge of the millet sounds interesting. using someone elses criteria is the same thing that gun magazines do. There is one post by T_bone that has a rating system -- use search and find it.

 

http://www.opticstalk.com/forum_posts.asp?TID=1610&PN=1 to choose to agree or disagree.



Edited by Dale Clifford
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/07/2007 at 05:17
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ILya gives good advice and suggestions, there are some on here who tend to think you can't evaluate scopes by simple comparisons and your own eyes, ignore those assumptions and I'll give you some ideas, trying to make scope evaluating seem complicated or hard only exists if you choose to make it that way. Testing at low light with textured objects at a set distance in the woods shadows is an excellant way to compare two or more scopes for brightness. Using simple to download from the net acuity and contrast charts will allow you to comapre resolution and color correction for your eyes again at a set distance, doing a square test as outlined above will allow comparisons of tracking while using the low rising or setting sun and looking in that direction (not at the sun) will expose halos - flare-out - and reticles that reflect light and wash out. Eye relief and mounting length are simple to measure features, and parallax can be checked for with the gun on a rest and looking thru the objective and moving the head slightly while staying in the eye box and seeing if the crosshairs move on the target. Eye movement leeway will be apparent when looking thru the scope and moving your eye position slightly. Evaluate your scope and compare against other scopes you may own....its easy and results in facts and knowledge both for you and the rest of us if you post it up for all to see. In the price range you are working in the Millet will provide pretty good optics IMHO.

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