I agree entirely JM. To use the front trigger guard screw as a good example, then purely from the engineering worlds point of view, then if this thread was properly restored with a correctly fitted helicoil, then I'd say that's good enough for me.

At Uni; during our practical lessons we'd load helicoils up to some tremendous forces for discussions and the like and as a result I'm a regular user now.

But I don't think I'd feel the same about the barrel thread!