Zoots.  I remember having to ask an old friend what the heck a Zoot suit was.  That would have been back in the 60s.  He was a WWII vet that knew everything.  Well, almost everything.  I have an old file trim die that would fix your collapsed shoulder, no disassembly of the rounds needed.  It's the die I use to push the shoulder back on .303 British I sometimes shoot in my Krag.  It's also a good way to make sure you don't have any overlength cases to cause the problem.  Now I remember how the subject of Zoot Suits came up.  It was the plaid "leisure suit" jacket that I got my junior year, so the question to him would have been in the early 70s.