I'm using the Burris rings for the Rimfire/CZ grooved receiver. Maybe I need to re-clean everything and tighten the ring bases more?
Did you use the correct clamp for the 11mm dovetail?
What part# are your rings?
This is probably the issue. You need to make sure you reverse the clamp to get etc the 11mm fit vs the 3/8.
I'm using Burris item # 420556 Signature .22 rings.
Yes, for sure the dovetail clamps are correct.
Clamps are stamped so you can't mix them up. If you use the 3/8 where 11mm is correct, it is a visual mismatch.
I'm hoping I just didn't clean well enough with alcohol the clamps and the grooves on the receiver, well enough and need to tighten more?