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Help with mount issues

 
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  #8  
Old 02-15-2012, 03:30 PM
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Re: Help with mount issues

Quote:
Originally Posted by Dr. Vette View Post
You may end up with a lot less grip from the rings if you lift the rear and then lap them. Just a forewarning should you see your scope start slipping....

I just checked the Burris site - the height of the regular Zee rings and Signature Zee rings is the same for the low height - 0.150. I don't even see that Burris currently lists them in "extra low" for the Zees - and I'd find it hard to believe that they'd work even with a 40mm objective.

Signature ring measurements (bottom of page):
Scopes - rifle scopes, handgun scopes, hunting scopes by Burris Optics

regular Zee ring mesurements (bottom of page):
Scopes-Solid Steel Rings by Burris Optics
Why would there be less grip? Isn't that the purpose of lapping them? My thoughts on lapping the rings is that it would be a way to align the slight angle (and hard edge) created when you raise one ring .010 - .015" above the other.

You are looking at the wrong rings on the Burris site. Burris doesn't make 1" low signature zee rings. It only makes mediums. You are correct about the extra lows which they apparently don't make any more. I have lows on my rifle.
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  #9  
Old 02-15-2012, 06:59 PM
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Two more thoughts:

0.14" is about the thickness of a cheek pad for a shotgun. You see where I'm going here.

Rather than lapping the rings, which might be a lot of work, you could bed the scope with stock bedding compound or JB Weld. There's a youtube video of how to do this. Place a piece of shim stock on the rear ring when you bed the tube. It will be embedded in the compound when you're done.
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  #10  
Old 02-15-2012, 07:10 PM
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Re: Help with mount issues

Quote:
Originally Posted by bruce_ventura View Post
Two more thoughts:

0.14" is about the thickness of a cheek pad for a shotgun. You see where I'm going here.

Rather than lapping the rings, which might be a lot of work, you could bed the scope with stock bedding compound or JB Weld. There's a youtube video of how to do this. Place a piece of shim stock on the rear ring when you bed the tube. It will be embedded in the compound when you're done.
I know where you are going with the cheek pad. I already have one on the rifle. Increasing its height works. I have that set-up on my 7 SAUM with the 50mm LRT scope. I really like the height of this scope and will endeavor to keep it that way. (hard headed I guess)

Thanks for the tip on the scope bedding. I will check it out.

By the way, the Leupold tech told today me that shimming the rear base works just fine and is a method recommended by Leupold. He did say to not go over .030" because it creates an aesthetic issue.

Dan
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  #11  
Old 02-15-2012, 07:44 PM
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Look for a two part video by a Canadian dude. He has the process nailed. Adding the shim is a mod to his process, but should work fine. A thin strip or two of scotch tape should work - it's just a spacer until the compound sets.
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  #12  
Old 02-15-2012, 10:18 PM
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Re: Help with mount issues

Quote:
Originally Posted by DZelenka View Post
Why would there be less grip? Isn't that the purpose of lapping them? My thoughts on lapping the rings is that it would be a way to align the slight angle (and hard edge) created when you raise one ring .010 - .015" above the other.

You are looking at the wrong rings on the Burris site. Burris doesn't make 1" low signature zee rings. It only makes mediums. You are correct about the extra lows which they apparently don't make any more. I have lows on my rifle.
You're also making an egg-shaped hole when you lap them. Only one portion of the ring will still be 1 inch in diameter - the rest will be larger. Lap a little too far and...

Sorry about the low size - you are correct.

I have used the dovetail/windage style of bases (i.e. Leupold style) with medium size Burris Signature rings on a few rifles, and they're right down to the barrel. On every rifle I own with Weaver-style bases and rings, the base always seems to be taller and I have to use a "shorter" ring to compensate. So, a low ring in your case may be needed to match your bases, but a medium ring with the Leupold style of base would work as well. Make sense?

I've got a 3-9x40 with Weaver style bases and the Signature Zee rings on my Vanguard, and it's nice and low against the barrel, FYI. You might want to try them as it's probably a better option than shimming and lapping in the long run. I also prefer my scopes as low as possible so I can understand what you're after. You can always put a -10 insert in the rear ring and a -20 in the front, lowering the whole thing a bit but also giving you incline.
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