I may have gotten a lemon. It is the old 2X7 variable and is very heavy. The tube is like pure aluminum, dead soft. Even lapped rings would not hold it.
Been a gunsmith since the early 50's and never seen anything like it.
I never had a problem mounting them to rifles, no damage but this pistol scope drove me nuts. Drove me away from Burris too.
These are just a portion of my scopes and have been on and off so many guns I can't count them from big bore rifles to .475 and 45-70 revolvers. The little Loopy has been in use testing revolvers since the scope first came out and has recently withstood the .500 JRH.
The second from right is the Burris, look at the tube. It was used on a .44 mag, pipsqueak gun with a 10" barrel.
You can get scratches from rings but I never seen a tube squeeze like this and then slip with every shot.
SANDPAPER ON RINGS? What is that about? Rosin would not hold this thing.