JB inside the stock works wonders. I've epoxied then drilled, and drilled then epoxied the threaded end. The epoxy first gives you the ability to remove it later (if you let it fully cure prior to installing the stud), and gives a little more for the stud to hold into. If you want it to never move: drill and install the stud, put a shooter marble size blob of epoxy and work it down around the threads and into the stock material to strengthen the area. It sure beats opening things back up to tighten the nut.