Alignment solution?

 Sometimes a suppressed rifle shooting low-velocity ammo requires extreme elevation bias in the base/ring setup.  

 

The old Leupold/Redfield Windage-adjustable bases/ rings were used for years but offerered no elevation correction, only windage.

 

We often advocate one-piece Picatinny bases with or without forward cants. Burris Signature rings with eccentric inserts are often helpful and available for various base types but they do have a few limitations.

 

Shimming bases is often warranted, but difficult to explain how to do correctly.

 

 Lately I've noticed the B-Square adjustable Rings,  http://swfa.com/B-Square-InterLock-Adjustable-Rings-P1471.aspx  advertised as having both windage and elevation adjustability. They look reasonably well-made, and B-Square has a good reputation.

 

Does anybody here use these rings?

 

Unless I hear otherwise, I'm going to get a set and try them out. They are available in 3/8 and 11 mm. dovetails for various  airguns and rimfire rifles with grooved recievers, as well as the common Weaver type with the cross-blade recoil lug.

  I sure would like a few of you guys to take a hard look at these and tell me what you think. Click around the B-Square page on SWFA's site and check out the various models.

 

 I'm thinking they may be a great solution to a lot of shooters' mounting problems...

 

 Well I like Dual Dovetails too, and have used them for decades, but they aren't really an answer for a firearm in which a significant alignment issue exists. In fact they offer no adjustability whatsoever, so I guess one could argue that if one's scope isn't well aligned to the rifle, and one used Dual Dovetail rings in that scenario, one would in fact be introducing a factor into the equation that could cause accuracy error. (Turret adjustment nearly bottomed out in one direction or the other before a zero is acheived.)

 I'm not sure, but I think there are also parallax issues in an off-axis scope tube which has been zeroed strictly with the internal adjustments only, that are not present in a scope in which the tube is in a parallel or at least a near-parallel axis to the bore.

 It almost looks as though there is a threaded (?) spindle in the lower half of the ring which appears to have a nut or bushing notched to accept a spanner wrench for height adjustment. I'm speculating wildly here though, based solely upon the photos. If I'm right, I suppose it would have to be adjusted before assembly.

 

 ALRIGHT, I WILL!

 

Yes.

But the Dual Dovetail system  doesn't work on grooved .22 receivers or integral Picatinny rails such as those on an AR.

 

 I know that Burris also makes Signature rings that work with those systems, and there are no more vocal proponents of them than I am. I think they're great.

 

But I'm just trying to learn more about other options as well, hence this thread...

 

 

 

 

  Let us know how you like them.