yes - tell them to use a nice modern 9mm ∙

I guess technically it would not be PC-nothing is.

Politically correct isn’t the issue. Russian roulette is the name and is not negative. But to say that to someone is telling them you wish they’d go kill themselves. What if they did? Would you feel good? Also, promoting or abetting suicide is illegal in most states and even though there is a chance they wouldn’t get the one bullet in the chamber, they could, so find something else to say.