Scope Rings With Inserts

[LynnJr]

I was shooting 2000 yards last weekend and one of the shooters was using scope rings with inserts that would go from 4 moa of cant to 54 moa of cant. They had 6 clamping screws and were not Burris Signature Zee rings but some newer design.
I thought the Shooter said XTR rings but I can't seem to find them on the Burris website that work with 30 mm scope tubes.

[JMP]

XTR are Burris.

http://www.burrisoptics.com/mounting-systems/rings/xtr-signature-rings

Go to specs, and you will see that 420221-420223 are for 30mm tubes.

[LynnJr]

Thank You
JMP
I was not including the signature part and was getting a lot of $40 rings without the inserts.

[ElvenSoul]

Very interested to know if these handle the big magnums.