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jmsdad Offline OP
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Sent in a Leupold 2-7x33 VX-I to Leupold to retrofit a CDS MOA dial. Forgot to ask if zero stop was possible with the plain MOA dial, but the scope came back with no zero stop. This scope is mounted on a 16" 6.5 Grendel in AR15 config.

No zero stop, NO problem!! If you desire a zero stop, it's easy to do.

Buy a 1/16" diameter ball bearing. You'll also need a 1/16" drill bit and a drill press or a hand drill.

[Linked Image]



If you take off the CDS dial cap and look on the inside, there is a spot drilled for a bearing. Not sure where this spot is in relation to the numbers marked outside on other caps, but this one is on the #6 hashmark. Decide where you want your zero stop (exactly @ 0 or a bit past 0) and mark/drill the cap to accomodate the 1/16" bearing. You don't want to go too deep as this will defeat the purpose and the cap will rotate past with nothing to keep it from stopping. For this cap, I set the zero 2 clicks past zero.

[Linked Image]



Put a dab of grease to hold the bearing in place...

[Linked Image]


Protrusion/Stop on Elevation turret...

[Linked Image]



Zero...

[Linked Image]


Zero-stop...

[Linked Image]




Where dial stops @ upper end...

[img]http://i13.photobucket.com/albums/a286/jmsdad/IMAG0906_zpsd0144110.jpg[/img]

Last edited by jmsdad; 06/25/13.
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Nice pics, but it looks like you got it in the wrong place??????


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Nice work.


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jmsdad Offline OP
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Originally Posted by JGRaider
Nice pics, but it looks like you got it in the wrong place??????



Not sure what you mean?

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Not being critical by any means, but shouldn't the 0 (zero stop/sight in distance) line up with the hash mark on the scope tube? My CDS dials w/zero stop all do. Where the scope stops on the upper end should also be closer to the zero. I may be confused but in looking at the pics it seems the zero stop may be in the wrong place.


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It is a bit confusing to my old dinosauer mind to have two zeros with three hash marks between them.

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That's actually a 0 and a u (for up direction). It does look like two zeros in the pic though.


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jmsdad, thanks for posting. I thought about doing the same but I did not know what size bearing to buy or where to find them. Hobbyshop?

Even if the stop is not "exactly" at zero it still serves the purpose of preventing the dial from being spun to far and loosing track of zero. Besides, you can return the dial to the stop and either back to zero or leave it. You still need would to look at the dial to spin up.


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Neat work.
How does Leupold view this as regards the warranty on the scope?

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I would bet it does not void the warranty on the scope and there is not much to go wrong with the cap that would require a trip back to Leupold.


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Originally Posted by RDW
jmsdad, thanks for posting. I thought about doing the same but I did not know what size bearing to buy or where to find them. Hobbyshop?

Even if the stop is not "exactly" at zero it still serves the purpose of preventing the dial from being spun to far and loosing track of zero. Besides, you can return the dial to the stop and either back to z
ero or leave it. You still need would to look at the dial to spin up.


Hardware store...I like ACE because it's closer to me and they stock hard to find items...

I could have set the zero stop at exactly zero, but didn't want to chance it not knowing where it'll end up. I'll drill another small hole and get it line up at exactly zero when I have time next week.

Zero stop is fool-proof for the 11yr old son and myself included. Without the stop, I would hate to imagine the dial being one revolution off and taking a shot at the largest deer one has seen in a lifetime.




Originally Posted by wsmnut
Neat work.
How does Leupold view this as regards the warranty on the scope?

Wsmnut


I'm not worry about it. It does not affect the internal mechanism of the scope. Worst case scenario is I call up Leupold to order another dial...

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Nice work...and tagged for later!

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tag


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thanks for posting


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Tag





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worth a tag for sure

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Thanks for the info.

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tag

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Could also be done with a set screw, no?


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Originally Posted by jmsdad


............

If you take off the CDS dial cap and look on the inside, there is a spot drilled for a bearing. Not sure where this spot is in relation to the numbers marked outside on other caps, but this one is on the #6 hashmark. Decide where you want your zero stop (exactly @ 0 or a bit past 0) and mark/drill the cap to accomodate the 1/16" bearing. You don't want to go too deep as this will defeat the purpose and the cap will rotate past with nothing to keep it from stopping. For this cap, I set the zero 2 clicks past zero.

[Linked Image]

............


Why would Leupold put the spot for a bearing at the #6 hash mark? You'd think they would have it lined up with 0 from the start.


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