removing loctited screw
 

I've seen various methods discussed, all bad.. To do it easily, use a small air impact wrench, (1/4" or 3/8" drive) vary the pressure until screws back out. Simple. CM

Yeah, I think I'll take a pass on using an air impact wrench. It's typically things like scope mounting bases, scope mounts or rings that guys lock-tite. I'm not using an impact on my scope stuff.

I use good old heat.

here is what I do, vice the gun, find a very good fitting screwdriver, place it in the slot, apply pressure counter clockwise to loosen, tap the top of the handle of the screwdriver with a hammer, it will come loose.
RR

A lot of misconceptions out there about Loctite. Loctite (242) blue is not permanent, merely helps to keep screws from accidental loosening. Loctite (271) red is tough stuff and usually requires heat to loosen.

Air impact drivers are really great ways to break screws, especially in stainless steel firearms.

Loctite isn't that hard to deal with. If it's blue or purple, turn it out. If it's red, get it hot, and turn it out. It's not that difficult.

I've always used and likely always will use Locktite 272 (red). I've never had any trouble removing screws. The trick, as previously mentioned is to use the proper fitting screwdriver. One that fits the slot completely both in width and length.
The problems I've encountered were with allen or torx type cap screws caused by someone over tightening them and stripping out the holes.
A lot of people seriously over tighten scope base and ring screws to the point of stripping heads and damaging scope tubes or even breaking off screw heads.

I've never used Loctite on anything in my safes and, knock on wood, have never had a screw loosen on any scope mount.

Heat! Will do the trick

This is pretty much how I do it too.

I do not use Locktite or other such products. I hand tighten and when then put a dab of clear finger nail polish on the top of the screw head. As already mentioned, if you romp down on the mounting screw, you are very likely to strip the threads.

A "hard stop" hand tight with just a scunch more is plenty firm. This method has worked great for me for many, many years. I have never hand any back out. To loosen, just a dab of polish remover softens the dried polish and backing out is simple.