Originally Posted by johnbrowning
The Challenger 3 has to be unscrewed to clean.3 screws. Would the blue be the way to go? If it doesn't get cleaned after 100 to 150 rounds I get fte,ftf .
Hmmmmm. Locking & removing frequently is going to be a problem for any method. Any type of mechanical interference fit - such as an over-sized fastener or even a three-lobed, self locking screw - will only work for so long until the softer of the two materials being joined will begin to distort. This will eventually leave you in the same boat you started in PLUS you'll most likely have female threads that nothing will fit.
OTOH, all chemical threadlockers that I've used will accrete if you don't remove them with tap, die, wire wheel or whatever. That's just the nature of the beast - they work by sticking to fasteners. I'm not really sure if this could actually become a problem or not, since I've always removed any buildup or replaced the fasteners.
Personally, I think I'd try the low-strength Loctite 222 or similar, & just clean it off the screws every time. It should be easier to remove any accretion than even the blue stuff & should
still be strong enough to prevent the screws from vibrating loose. The only other solution that comes to mind is to see if there are any screws available of the same size & type that have a nylon insert right in the screw threads. (Basically the same principle as a Nylok nut.) I've only seen/used these a few times though, so this may not help here but it could worth googling... If they are available, buy a whole box & throw 'em away after several uses.