I have mounted more optics than I care to remember and have used some form of thread locker for quite a while. For some bone headed reason I mounted a FF without thread locker a few years back(would have sworn I used it) and the screws backed out after approx 15-20 shots. It ruined one of the holes from the loose screw under recoil, but nothing a larger tap wouldn't fix. Thought it would be a good reminder for those of you mounting optics on severe recoiling turkey rigs.