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Joined: Oct 2009
Posts: 69
Campfire Greenhorn
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OP
Campfire Greenhorn
Joined: Oct 2009
Posts: 69 |
I assume scopes come from the factory with the turrets set at the mid point of their adjustment range. Is there any way to return one to that point other than counting clicks up and down and then counting again to the mid point. Scope in question is a Zeiss Conquest 3x9x40. Reason for asking is when one wants to switch a scope to a different rifle, do you try to return turrets to the mid point to start fresh on the new rifle?
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Joined: Mar 2006
Posts: 20,958 Likes: 3
Campfire Ranger
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Campfire Ranger
Joined: Mar 2006
Posts: 20,958 Likes: 3 |
Is there any way to return one to that point other than counting clicks up and down and then counting again to the mid point. No. do you try to return turrets to the mid point to start fresh on the new rifle? Some people do. Whenever I make scope swaps I don't do it unless the new zero attempt requires some serious cranking on the turrets. Most of mine don't. If it's a scope that has been in the safe a while I always "remiddle" it.
By the way, in case you missed it, Jeremiah was a bullfrog.
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Joined: Aug 2002
Posts: 19,136 Likes: 6
Campfire Ranger
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Campfire Ranger
Joined: Aug 2002
Posts: 19,136 Likes: 6 |
I am sure somebody will chime but it seems I remember something about putting the objective on a mirror and you could see when it was centered. But then again I am old and may have dreamed it. miles
Look out for number 1, don't step in number 2.
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Joined: Jun 2004
Posts: 44,936 Likes: 23
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,936 Likes: 23 |
Press the objective end of the scope squarely against a mirror. Look into the ocular end. If you see one reticle, it's centered. If you see two reticles move the adjustments until you see one.
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Joined: Nov 2003
Posts: 28,964 Likes: 6
Campfire Ranger
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Campfire Ranger
Joined: Nov 2003
Posts: 28,964 Likes: 6 |
jd3006,
Don't laugh at mathman.
Try it. You'll like it.
edited to add: Welcome to the 'fire.
Last edited by Ringman; 08/12/11.
"Only Christ is the fullness of God's revelation." Everyday Hunter
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Joined: Jan 2007
Posts: 7,297
Campfire Tracker
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Campfire Tracker
Joined: Jan 2007
Posts: 7,297 |
Ideas are far more powerful than guns, We dont let our people have guns. Why should we let them have ideas. "Joseph Stalin"
He who has braved youths dizzy heat dreads not the frost of age.
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Joined: Mar 2006
Posts: 20,958 Likes: 3
Campfire Ranger
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Campfire Ranger
Joined: Mar 2006
Posts: 20,958 Likes: 3 |
Hmmm, learned something new.
By the way, in case you missed it, Jeremiah was a bullfrog.
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Joined: Aug 2005
Posts: 28,310 Likes: 21
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 28,310 Likes: 21 |
Hmmm, learned something new. You ain't the only one.
It is irrelevant what you think. What matters is the TRUTH.
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Joined: Aug 2002
Posts: 12,022
Campfire Outfitter
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Campfire Outfitter
Joined: Aug 2002
Posts: 12,022 |
I've used the mirror method. I've also used v-blocks. Rotate the scope in the V-blocks and watch the center of the reticle. If it's perfectly centred, the intersection of the horizontal stadia and the verticle stadia will rotate around where they intersect. If the reticle is not centerered, the "X" will be following an elliptical pattern. Through trial and error, you can get one perfectly centered this way too.
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Joined: Jun 2001
Posts: 8,655 Likes: 1
Campfire Outfitter
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Campfire Outfitter
Joined: Jun 2001
Posts: 8,655 Likes: 1 |
I've used the mirror method. I've also used v-blocks. Rotate the scope in the V-blocks and watch the center of the reticle. If it's perfectly centred, the intersection of the horizontal stadia and the verticle stadia will rotate around where they intersect. If the reticle is not centerered, the "X" will be following an elliptical pattern. Through trial and error, you can get one perfectly centered this way too. My usual approach. However, one does not need V-blocks if you are using horizontally split rings. Just lay the scope in the bottom ring already mounted on the rifle, spin the scope, and adjust until the centre of the crosshairs does not move. I found that with some scopes, counting clicks did NOT get the reticle optically centered. I am sure that the difference was not enough to worry about though since it was within about 3 or 4 MOA. John
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Joined: Mar 2002
Posts: 9,133
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2002
Posts: 9,133 |
Make it easy and use the mirror!
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Joined: Mar 2005
Posts: 5,616 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Mar 2005
Posts: 5,616 Likes: 2 |
Optical center using a mirror, internal adjustment center using clicks, and center based on the exterior surface may all be a little different.
Bruce
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Joined: Mar 2001
Posts: 631
Campfire Regular
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Campfire Regular
Joined: Mar 2001
Posts: 631 |
Here's a video done by US Optics on centering your erector. It will work on any scope: Erector Centering
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Joined: Apr 2008
Posts: 2,683
Campfire Regular
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Campfire Regular
Joined: Apr 2008
Posts: 2,683 |
I've use the mirror method mentioned above in the past, it works fine for centering the scope but that is of little practical use for me so I don't bother anymore. Typically, I will just put the scope in the rings, remove the bolt and sight it in the old fashioned way, by looking down the bore at an object and then crank the turrets to match, this is by far the best way to bore sight a scope in my experience. Once fine tuned at the range, I use a Leupold zero point module to mark the POA once, and use it to return the scope to the same settings once removed and then remounted. Works like a charm.
Josh
Yeah, well, you know, that's just, like, your opinion, man.
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