Revolvers without scope sounds like a good thing but... when the gun kicks it takes up your whole screen. With one of those "fire as fast as you can pull the trigger" revolvers you literally only see the gun after the first shot. I prefer bandit sights on all my pistols, nice simple round scope with low magnification.
Anything that kicks is way too annoying without a scope IMO, unless it has sub 1.0 fire rate. Or you dont plan on aiming after the first shot.