Back on topic
I used to have various dreams along time ago where my gun wouldn't work right and stuff like you describe. I never really understood why I'd dream something like that. But then a funny thing happened...
I started shooting more often and trying to upgrade my range visits from casual plinking sessions to some fairly serious practice and viola', my guns started working right in my dreams too...It was like one extreme to the other!
Now, I'm no psych, and I'm not sure I really understand it still, and I'm not trying to say anything, but there may be a connection there...
I very rarely dream of guns anymore.