Thank you both. So is this 3/8 dovetail same as 11 mm dovetail?
Thank you both. So is this 3/8 dovetail same as 11 mm dovetail?
No, the angles are quite different. More then likely the rings you have are 11MM, and that is why they are not clamping. I like the Burris 22 rimfire rings if you want light the Leupold Rifleman 3/8" dovetail rings are pretty decent for a 22. I wouldn't use them on anything else though.