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Join Date: Jun 2009
Location: Northern Berks County, PA
Re: Scope Rings
You can start to compress a scope tube by over-torquing and that will compromise either the tracking or ability to hold zero.
If it's moving, my money would be on the rings needing to be lapped. That improves the surface area of the rings in contact with the tube, which will do far more for you than cranking down the screws on the rings or putting thread-lock on them.
The only way locking the screws will help is if the screws are backing out/losing torque/coming loose under recoil. I would bet they aren't unless you've got like 5-10 inch-lbs on them, which is VERY little torque.
I would bet you a dollar that locking those screws and cranking the snot out of them isn't your fix. I'd be lapping those rings and getting as close to full contact as possible, and then trying again. And I'd bet at that point, your problem is solved. Out of the box, rings often don't have nearly as much surface contact as one would think.
My 300H&H is not heavy and is shooting 180's fairly fast. It kicks like a ticked off mule (especially since it's an old Winchester with a steel buttplate...yikes!), no scope movement. No loctite.
35 Whelen shooting 250's at 2500+. No movement. No Loctite.
300WSM, light rifle. No loctite. No movement.
264WM, 140's at ludicrous speed, bordering on "going plad" (see if anyone gets the movie reference, lol)....no loctite, no movement.