Scope Ring Question

[Vrod]

I ran into an issue I have not experienced before. Mounting the 10 or so scopes in my collection. I have usually used Vortex, Warne or Night Force rings. A friend of mine gave me a package of new unused Leupold Back Country 34mm I was mounting on my RPR picatinny. Low and behold, they were loose on the rail after tightening to spec. I attached a few other rings on there and they worked fine. Any thoughts?

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[Koda]

Any thoughts?

Now you know why he gave them to you....
Not really, well.....
In all seriousness, Leupold makes nice stuff. Really odd it doesn't fit a pic rail.
I would check these rings on a different pic rail... to rule out the rail being under spec.

If the rings are bad, send them back to Leupold, they have a great warranty on their stuff and will replace them for free.

 

[arrowshooter]

Try flipping the little clamp thingy the screw goes through over? This is how some mounts work on both Pic and Weaver style rails.

 

[lucusloc]

Try flipping the little clamp thingy the screw goes through over? This is how some mounts work on both Pic and Weaver style rails.

It is either this or you have some fouling in the clamp somewhere. What happens if you over torque it (obviously don't strip the screws)? does it hold better?

 

[Koda]

Try flipping the little clamp thingy the screw goes through over? This is how some mounts work on both Pic and Weaver style rails.

Good tip. Clamp orientation would be critical on these rings.

BackCountry Cross-Slot 34mm High Rings Matte

The Leupold® BackCountry series comes in cross-slot and ringmount styles that accept both Picatinny and Weaver-style rings. This cross-slot model is specifically designed to fit any riflescope with a 34mm maintube.

www.leupold.com

 

[arrowshooter]

Going by the photo it may not work, but worth a try.

 

[Vrod]

Ya can't flip over. You can tell there is no space between the clamp and the ring. They are solid together at 25 in/lbs. Two other sets of rings worked fine. Just seems like the rings are out of spec but don't have a caliper to compare. My set of Vortex PMR's are great so I'm going with those. Was just thinking that maybe someone on the forum has run into this before.

 

[lucusloc]

I mean yes, but the reason was always obvious. Calipers would really help here, or having another known-good set of rails to test on.

 

[Koda]

They are solid together at 25 in/lbs. Two other sets of rings worked fine. Just seems like the rings are out of spec but don't have a caliper to compare.

I still find it odd that Leupold rings would be out of spec.
If you have time maybe post a closeup pic of them on the pic rail?

If they dont work send them in, Leupold will replace them for free.

 

[Vrod]

To be continued when I do some measuring.

 

[Vrod]

Here are some pic rail measurements:

RPR 0.61
BLK 0.62
SOCOM 0.64
Beowulf 0.62

So it seems to me that the Leupold Picatinny rings should fit all these rails. If it slides easily at 0.61, it's still not going to be tight enough at 0.64.

 

[Koda]

Here are some pic rail measurements:

RPR 0.61
BLK 0.62
SOCOM 0.64
Beowulf 0.62

So it seems to me that the Leupold Picatinny rings should fit all these rails. If it slides easily at 0.61, it's still not going to be tight enough at 0.64.

A pic rail should measure .830 across..

 

[Vrod]

I was measuring underneath the top. I will remeasure on the top

 

[bcp]

Rail dimensions:

https://upload.wikimedia.org/wikipedia/commons/6/6a/M1913A_Rail_CrossSection.svg

Bruce

 

[Vrod]

All 4 measures at 0.83. So it had to be the rings out of spec.

 

[Koda]

All 4 measures at 0.83. So it had to be the rings out of spec.

Send them to Leupold and they will replace them with good ones. Leupold rings are [usually] good stuff.

 

[Vrod]

Send them to Leupold and they will replace them with good ones. Leupold rings are [usually] good stuff.

Gave them back to the guy who gave them to me. Told him to return them. I know Leupold is a good product but 4 of my 8 mounted scopes use Vortex. I will continue with Vortex.