My "Companion" Italian folder, purchased in 1973 and shot plenty, isn't loose. When I'm at a show I make it a point to examine the similar guns that I see, and I don't ever recall seeing one that could be described as loose, when it was closed, including a Beretta trap specific version of the gun that had seen many thousands of rounds.
I have no idea why they don't seem to get loose.

Best,
Ted