I’ve never shot it, but Ruger makes the LCR in .327 Federal Magnum. That would be a small, lightweight, very capable revolver. Ruger also makes the SP101 in that caliber, still pretty small but heavier. I think you get one extra round over the same sized revolver in 38 Special. Don’t know about the availability of 327 ammo.
Very interesting. I’ll look into it.