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Which Scope Ring Lapping Tool?

 
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  #8  
Old 12-27-2010, 12:31 PM
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Re: Which Scope Ring Lapping Tool?

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Originally Posted by Buano View Post
I would love to make my own, but it's been 30+ years since I had access to a machine shop.

If I have some rods cut from drill rod or something similar, do I have them cut exactly 1" & 30MM or do I make them slightly undersized to allow for the lapping compound? If I make them undersized, what dimensions do I specify?

Thanks!
most places that sell ball bearings (not your hardware store) also can get Thompson rod. It usually can be had in different lengths as well. You just need to know what diameter you need (it comes in both English & metric diameters). It's strait and has a ground mirror finish on it.
gary
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  #9  
Old 12-28-2010, 09:24 PM
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Re: Which Scope Ring Lapping Tool?

It is sort of off topic, but I use the Burris Signature Zee rings also. I like the dual turn-ins, but I prefer to be able to tip the scope off without having to take it out of the rings, so I normally get the Zee rings and Weaver Grand Slam bases. In my opinion, it's an excellent alternative to lapping rings.

Tom
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  #10  
Old 12-29-2010, 11:48 AM
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Re: Which Scope Ring Lapping Tool?

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Originally Posted by specweldtom View Post
It is sort of off topic, but I use the Burris Signature Zee rings also. I like the dual turn-ins, but I prefer to be able to tip the scope off without having to take it out of the rings, so I normally get the Zee rings and Weaver Grand Slam bases. In my opinion, it's an excellent alternative to lapping rings.

Tom
I've used that setup several times over. Find that the scope often cames back within an inch at 100 yards, but never have had one come back to the same zero. Perhaps others have had better results than I have?
gary
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  #11  
Old 12-29-2010, 09:51 PM
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Re: Which Scope Ring Lapping Tool?

Gary, good point. With the Signature rings, I've had return to impact as much as 1 moa off, but never worse. My .220 Swift returned to poa as close as I can shoot, but a 6 BR was off poa 1" at 100 yds.. With Weaver Grand Slam (rigid) rings, and Grand Slam bases, it appears that they can return to impact within 1/2 moa pretty consistently. The Signature rings have 1" scopes, and the straight Grand Slam combo's have 30mm tubes. I don't know if that's a factor. Also, the 6 BR has aluminum bases, not the steel Grand Slams.

I think somebody mentioned it, but a big feature of the Signature rings is that they WILL NOT mark a fine scope. I put a set on a friends custom lightweight .300 Wby (a fair kicker) with an older glossy Leupold scope that I absolutely did not want to mark. I've got another set ordered for a 30mm Swarovski that I also do not want to risk marking. Easy call.

Tom
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  #12  
Old 12-29-2010, 10:35 PM
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Re: Which Scope Ring Lapping Tool?

Thanks everyone for the responses!!

I ordered the Wheeler Engineering Scope Ring Alignment & Lapping Combo Kit. Even though I could likely come up with something nicer from scratch, it didn't seem to be worth the time. I've got other projects, some would say too many projects, to spend my time on.

Thanks again!
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  #13  
Old 12-30-2010, 10:57 AM
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Re: Which Scope Ring Lapping Tool?

Quote:
Originally Posted by Buano View Post
Thanks everyone for the responses!!

I ordered the Wheeler Engineering Scope Ring Alignment & Lapping Combo Kit. Even though I could likely come up with something nicer from scratch, it didn't seem to be worth the time. I've got other projects, some would say too many projects, to spend my time on.

Thanks again!
avoid using lapping compound like they sell in the automotive parts store (Clover compound is the trade name). It works just fine, but imbeds in the softer rings, and will then etch the scope body. As I said the best stuff I've used is Thompson Rod, but have also used plain old drill rod as well. Just get a better job with the Thompson Rod.
gary
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  #14  
Old 12-31-2010, 12:18 AM
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Re: Which Scope Ring Lapping Tool?

Quote:
Originally Posted by Buano View Post
Thanks everyone for the responses!!

I ordered the Wheeler Engineering Scope Ring Alignment & Lapping Combo Kit. Even though I could likely come up with something nicer from scratch, it didn't seem to be worth the time. I've got other projects, some would say too many projects, to spend my time on.

Thanks again!
You'll like it.

Maybe you know this already but a couple of thoughts....

I put "drop rags" over my action and other parts when lapping to avoid getting any compound down into the action or anywhere else. I also mark the rings with a Dremel at the mating surface by one of the ring screws so I know which ring is front and which one is back, and which side is then left and right. A very tiny dot for the front left, and 2 dots for rear left, with the dots on both the upper and lower halves and I can identify any part if I ever take it apart again without having to worry about ring alignment or lapping.

The rings will have compound on them after the process. Be sure to clean them off thoroughly.

Have fun!
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