RE: shell stuke in the chamber
I have always been told that IF your 1 time fired brass is not from your gun that you need to full length resize it. This brass has been "fire Formed" to the chamber of the gun that it was fired from. Meaning, it expanded just a little to the shape of the gun it was fired from. If there is just a hair difference from that gun to yours, the brass may, NOT ALWAYS, have a hard time chambering. As for it getting stuck. Could be one of a few things. I'll let somebody else get more into that. I haven;t had your end result problem, so I can't really advise you on it.
Good luck to you.