RE: Shotgun scope?
I have little regard for "see-thru" mounts. The ones I have seen put the scope too high up in the air, leaving your face hanging there with no support, and they appear less strong than other styles of mount. But, by all means use loctite, the blue stuff made for guns. Due to the recoil of a slug gun, you cannot have a mount that is too secure!!
Keep yore powder dry!!