I have been epoxying the bases to the receiver for quite a while now. They usually separate with little fanfare when needed but never seem to from recoil or hunting. There is very little down-side to doing it. To whomever things JB weld is a "weak epoxy" I will disagree with you. It is actually quite strong as epoxies go. I bed. lightly snug the screw and then tighten properly after a few hours. Don't get the epoxy on the threads. I'm with Stick on the welding,. I think it is better yet. Remington 700 actions rear bridges are ground with less that any precision. Bedding them is very helpful. It you don't think so. Mount a 2 piece base set and drop a level over the top. You will be surprised at how much out of alignment they are.
