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Post by rangeball on Mar 30, 2009 15:57:33 GMT -5
I need to order my rings. Scope is the Weaver Classic Extreme, objective measures 58 mm, tube is 30mm. I've settled on the Burris signature Zee in matte black.
I had thought in the past Burris listed their ring height on their website, but I can't find it anywhere now. I emailed them last week, still no response. I did find the following at Brownell's, but I'm confused-
"Pos-Align Standard (STD) Rings fit Burris/Leupold/Millett rotary dovetail systems. Pos-Align Zee Rings (ZEE) fit Weaver-style bases. Height shown is from top of base to bottom of ring. 30mm Standard Rings - Med. - .180" (4.6mm); High - .300" (7.6mm); Extra High - .420" (10.7mm)."
Seems they are differentiating the STD and ZEE rings, but then they only list the heights for the Standard rings. Am I to assume the ZEE rings are the same heights? You know what happens when we assume...
Also, I measured from the top of the weaver rail to the barrel after it drops into it's taper. I come up with 11 mm. So if I take the part of the objective that will extend down below the bottom of the tube, which is 14mm, and subtract the top of the rail to barrel height, or 11mm, I need a ring height of 3mm to get contact, so the 4.6 mm medium rings are what I need, assuming the listed specs for the STD are the same for the ZEE?
No wonder calculating the right rings always leaves me with a headache...
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Post by rangeball on Mar 30, 2009 16:22:52 GMT -5
This link seems to say they are the same (by default, the height they list is close enough to be the same after rounding)- www.longrangesupply.com/index.php?main_page=product_info&products_id=372So if this is right, is my way of calculating, measurement of objective extending below the bottom of the scope tube minus the clearance from the top of the rail to the top of the barrel? If so these would seem to give me about 1mm clearance. Considering recoil probably I should go with High rings and have 4mm of clearance? or Extra high and have 12mm clearance? |
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Post by jims on Mar 30, 2009 16:30:12 GMT -5
I have the old style Savage, flat rear receiver. I have Warne bases and use high Signature Zee rings for my 50 mm scope. I also have a 56 mm, but because of the adjustable objective knurled focus ring the high rings were not high enough to provide adequate clearance. I did not find the extra highs in the silver color I needed.
I know that does not exactly answer your question, you might email or call Burris. Just a summary to say the highs worked with a 50mm but my 56mm with highs was just too close for comfort for me.
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Post by dougedwards on Mar 30, 2009 16:40:47 GMT -5
I have a WCE 2.5-10x56 on my Savage with Warne bases and high Burris Zee rings which gives about 1/8" clearance between the barrel and the objective bell. However I always wrap the cloth style electricians tape inside of the rings which give it a small amount of elevation. If you have the Burris Signature rings you could always use the inserts to elevate just a little. Hope this helps.
Doug
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Post by rossman40 on Mar 30, 2009 18:47:44 GMT -5
The Standard Burris Signature rings are for the turn-in style mounts. The Signature Zees are for the weaver style mounts. There is a difference between a Zee and a Signature Zee, Signature Zees have the inserts. For the 30mm tube they only come in matte finish and are available in medium, high and now extra high. According to Burris medium is .205", high is .330" and extra high is .455" but Burris measures from the bottom of the scope tube to the bottom of the ring, you have to add another .065" to get from the bottom of the scope tube to the top of the mount. So your corrected numbers would be .270", .395" and .520"
Burris part numbers for Signature Zees, 30mm
Medium 420588
High 420587
X-High 420585
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Post by rangeball on Mar 31, 2009 8:38:42 GMT -5
The Standard Burris Signature rings are for the turn-in style mounts. The Signature Zees are for the weaver style mounts. There is a difference between a Zee and a Signature Zee, Signature Zees have the inserts. For the 30mm tube they only come in matte finish and are available in medium, high and now extra high. According to Burris medium is .205", high is .330" and extra high is .455" but Burris measures from the bottom of the scope tube to the bottom of the ring, you have to add another .065" to get from the bottom of the scope tube to the top of the mount. So your corrected numbers would be .270", .395" and .520" Burris part numbers for Signature Zees, 30mm Medium 420588 High 420587 X-High 420585 Glad I asked. You heights are different than the link I posted and others I've seen, none of which matched each other. For some reason I'm trusting your info  Using the corrected numbers, and assuming my measuring methodology described above is correct, the mediums would give me 3.97mm clearance, the highs 7.14mm and the x-highs 10.32mm. Do you think my methodology is correct and if yes which would you go with for adequate clearance for recoil but not to high? The highs? They would be about 1/4", which I can visualize... not to good with metrics  |
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Post by fishhawk on Mar 31, 2009 9:30:53 GMT -5
Rangeball, Is that the 2,5x10x50 weaver? And what bases do you have? .50 savage, or pacnor barrel? I have some 30mm signature zees (medium) several bases, and the above listed classic extreme. I also have a barrell and action off a gun I,m bedding that I can mock-up to check clearances and maybe send a picture.
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Post by rangeball on Mar 31, 2009 9:39:21 GMT -5
That would be fantastic!
Yes, that is the scope. Don't yet have the rings, I'm wanting to order 30mm Burris signature Zee with inserts.
Top of the weaver style rail (no idea of the maker) to the barrel is 11.11mm. Barrel is an SMI .50 cal H&R conversion.
Thanks!
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Post by fishhawk on Mar 31, 2009 9:55:40 GMT -5
It will be this evening before I can get home and check. With your different gun probably the best measurment would be on my mediums from tip of the "V" in the clamp area to centerline of the scope tube to give you a height reference.
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Post by rangeball on Mar 31, 2009 10:53:18 GMT -5
Thanks. But instead of that spec, could you measure from the top of the mount to the top of the bottom insert, where the bottom of the scope tube would sit? With all the different specs floating around out there, it would be good to know. I'm sure rossman's right, but it would be good to know. Thanks again |
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Post by fishhawk on Mar 31, 2009 12:29:23 GMT -5
Do you want the spec with a scope tightened in it or not because the insert mashes down when tight giving a different measurement.
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Post by rangeball on Mar 31, 2009 13:05:05 GMT -5
Tightened down would be great... Thanks |
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Post by fishhawk on Mar 31, 2009 17:19:53 GMT -5
Rangeball, from the top of a weaver grand slam base to the bottom of the scope tube is .260in. with a burris signature zee medium 30mm.
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Post by rangeball on Apr 1, 2009 8:45:18 GMT -5
Thanks a bunch. Rossman nailed it as usual Now I can order my rings with confidence. How many mm of objective clearance is enough? |
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Post by fishhawk on Apr 1, 2009 11:48:53 GMT -5
I wouldn't go much under .5mm.
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Post by rangeball on Apr 1, 2009 14:58:02 GMT -5
I wouldn't go much under .5mm. Just to be clear, that is .5mm, not 5 mm clearance, right? With my luck I thought I better ask |
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Post by fishhawk on Apr 1, 2009 15:27:39 GMT -5
My mistake, I was looking at the wrong line on my calipers (53 year old eyes). Lets try again 2.0 mm or .075in. ought to be plenty for a gun with this much recoil.
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Post by rangeball on Apr 1, 2009 15:39:20 GMT -5
Glad I asked Thanks a bunch. I'll go with highs and hopefully be very happy. |
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