Anytime I've had a dream where I was in a shootout and lost it was because I couldn't shoot straight, usually because the trigger was ridiculously heavy. I had variations on that 3 or 4 times and found out that dreams like that indicate a subconscious fear of inadequacy or not being good enough. Usually dreams have some kind of hidden meaning but in my case it was pretty straightforward. I wasn't confident in my ability to hit the threat in a life-or-death situation, so I started hitting the range a lot more.
I don't collect guns, I accumulate them.