If the 327 Fed takes off, to where the likelihood of scrounging ammo from a vacated house is pretty high, then I think the new Rugers would be a great example of a quality revolver that would last generations. The GP100 is one of the strongest DA actions made (some say THE strongest) while the Blackhawk SA is benchmark of quality in single action. And you can fire .327, .32 H&R Mag, .32 S&W Long (and short if you can find it.) My wife's go to gun is an SP101 in 32 H&R Mag; she is not a gun lover, but she knows that gun. It won't let her down, and she'll hit what she's aiming at within her comfortable range ... whether I am there or not.
Survival means even if I lose use of a hand, or its busy holding something or someone at the time, so I cannot stake our lives on something that requires two hands to operate or clear. As for speed ... it takes more skill to reload quick on a revolver, but I've seen some folks that make a mag swap look glacial. Google Miculek sometime.