On a hunting rifle, I will bed the bases with Devcon 10110 and I degrease first with my ultrasonic tank. I use green loctite on the screws and use a toothpick to put a drop of Gorilla glue inside the rings. I have never had one move with this method and don't have to use a torque wrench to get it tight enough. I only have one torque wrench that goes low enough and it is Torx type marketed by Warne so it doesn't fit everything. I torque stripe (inspector's laquer or tamper paste- whatever you want to call it) the trigger adjustment screws but not the scope screws. If you degrease them and use green loctite they won't move.
