I’ve always been fascinated by the Nagant revolver.
I would shoot mine more often, but the ammo is about 50 cents per round
They are an OK revolver, fascinating because of the “gas seal” mechanism, but as a practical arm, I would rather take an American 9 shot .22 revolver of the same barrel length any day of the week.
Underpowered, difficult to shoot double action, and slow to reload does not make a very practical revolver (unless it is mainly used to shoot helpless policial prisoners).