I actually just got some of these. I don't have the gun they go on yet, so I haven't mounted them but they look great. I am going to lap them because I have a lapping kit so I forsee no problems with them. Mine are the 30mm version. Just waiting for my rifle to get done at Stockade. I also was going to go the Burris route but they seem the same and these are cheaper
I can't imagine them not holding a scope in place.