***Freddie Prinze blew his brains out in an apparent game of Russian Roulette a couple days earlier.***
Depends on which web page you believe. NYTimes and NY Daily News says it was a .32 cal pistol, another says it was a .357 magnum revolver, and this one says it was a was actually a .380 Astra Constable semi-automatic. All agree it was suicide.
https://www.reelreviews.com/shorttakes-56/freddieprinze/freddieprinze
It took him 33 hours to die, so I’d rule out a .357. That makes a .32 ACP or .380 pocket pistol more likely.