Hello, I study Forensic Science in Amsterdam. There is this case that I'm working on that involves two pistols: a Beretta Parabellum 9mm and a Walther PP short. I understand that the Baretta fires the 9mm Para cartridge and that the Walther fires the .380 auto cartridge. My question: Is it possible to fire a .380 auto cartridge with this Beratta Parabellum 9mm? Also, is it possible to fire a 9mm Para cartridge with this Walther PP short? Thank you!