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Should I get my scope re-parallexed or not?

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2011 at 13:38
Novusordo View Drop Down
Optics GrassHopper
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Hi all, I'm going to be sending my Leupold FX-II 4x33 fixed power scope to USA Leupold tomorrow to have a duel erector spring installed and I asked them if I should get it re-parallexed while it is in there hands, unfortunately the Leupold agent did not have the answer but says she will let me know by tomorrow, but I'd appreciate it if you guys could advise me on the pro's and con's of re-parallexing a scope, and indeed weather or not I even need it re-parallexed?

Bearing in mind the only shooting I do is rabbit/squirrel/bird air rifle hunting and I usually engage the critters at 25-35 meters, but if conditions are ok I sometimes take shots up to 50 meters.

At the moment the sight picture looks perfectly clear and blur-free at anything beyond 10 meters so it's not so much a matter of me needing greater image clarity at short ranges becuase I rarely if ever shoot things at under 10 meters anyway, but would a re-parallex reduce the marksmanship effort and concentration I currently need to give to ensure that the crosshair is indeed pointing at that rabbits head and not just a parallex illusion? If so, what range would you experienced guys reccomend that I ask Leupold to re-parallex my scope to?

My scope - http://www.leupold.com/hunting-and-shooting/products/scopes/fx-ii-riflescopes/fx-ii-4x33mm/
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2011 at 14:05
Novusordo View Drop Down
Optics GrassHopper
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Hey just read this article and it seems that re-parallexing most fixed power scopes is extremely simple to do.
http://fuzzylimey.net/projects/parallax.html

Basically it says to unscrew to objective lockring, exposing the inner parallex lockring that features two notches designed to accomade a special spanner. Simply turn clockwise to increase the parallex range, or anticlockwise to reduce parallex range, all the while looking through the scope at a target to test each incremental adjustment.

Wow, is it really that simple? I better go and make up a suitible tool/spanner to fit the notches on this scope and have a go at next light!!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2011 at 14:08
supertool73 View Drop Down
Optics Jedi Master
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Just a thought, if you try to do that it may void your warranty with Leupold.  I would talk to them about it before you get messing to much with it just incase it does.  It would be a bummer if you broke it and then had to pay them to fix it ontop of having them change the parallax for you.

My opinion is if you never shoot over 50 I would have it set to 50.  It certainly cannot hurt anything. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2011 at 14:12
SD Dog View Drop Down
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For the hassle I would say it is not worth it.  One thing to remember is if you take the scope apart, any inert gas (assuming the seals are still good) will be lost and you will heal with fogging issues etc.  There may be more consequences as well. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2011 at 14:16
Novusordo View Drop Down
Optics GrassHopper
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Yes I will definately ask Leupold if doing it myself voids the warranty, but SD Dog, the process described in that article hardly constitutes "taking the scope apart" to an extent where any seal is potentially compromised.

I will let you guys know what Leupold says about DIY re-parallexing.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/21/2011 at 16:07
bugsNbows View Drop Down
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bowsNbugs

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IMO, if it's not broken don't fix it. Wink
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/22/2011 at 11:20
Plange View Drop Down
Optics GrassHopper
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Hi Guys,
In order to put in new erector springs they will have to remove the erector. Any scope shop worth its beans will automatically recheck/adjust the parallax as the erector was moved inside the scope. It doesn't take much to change the optical system- a few tenths of a millimeter is all.
To readjust the parallax it is as simple as the above post, however you need to remove the outer finish ring which is usually loctited in place and then the objective lock ring. Small movements CW or CCW- and I mean small- will create drastic changes in parallax and the big deal here is to have the trained eye that can pick up on these little nuances. Of course as with all optics it is give and take, if you give more at the bottom of the parallax range you will take some from the top. How much depends upon the design of the optical system.
Just my .02 cents worth.
Thanks,
Paul
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/22/2011 at 22:09
Sparky View Drop Down
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I think he is talking about having it changed from the factory setting.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/23/2011 at 00:46
Stevey Ducks View Drop Down
Optics Apprentice
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This is why I like scopes with adjustible objectives - I guess I am becoming more picky and always think I can do better than real good. With a 4x the difference in parallax between 50 & 100 yds is very minor and if I had a 4x scope that was going to be used on a variety of guns I would not mess with it. On the other hand if I intended to use the scope on a .22 RF or shotgun using slugs at 50 yds or so I would consider it.
 
They put adjustable objectives on certain 6x and greater power scopes just so scope owners do not have to unscrew lock rings and move lenses.
 
Another thought is spring type air rifles have very hefty springs that subject scopes to heavy forces in opposite directions than conventional powder weapons do. It might be a good idea to see what Leupold says about using your sight on an air rifle. 
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