I seem to have to random weapons in my inventory, which I did not pick up that can't be sold or put in containers. The first one I got was a while back while exiting the Ultra-Luxe. It was a mint condition Caravan Shotgun that uses MCA rounds, which I am pretty sure is not an ammunition type found in the game. At some point I also got a mint condition Power Fist, which I suspect to be Veronica's, and it doesn't degrade. I'm not sure if I want this patched (the Power Fist is pretty nice) but I was just putting this to you guys' attention. Has this happened to anyone else?

nope that wierd as

That seems to be happening with companion weapons when you enter casinos. The shotgun is Cass' I believe. The power fist would be Veronica's. It happened to me with Boone's rifle and I had to reload an old save to give it back.