Accepted.
Revolvers in mid-1800's were fairly accurate, they just had shitty range xD
Most gunfights took place within 25 yards or so. As Snag mentioned, they were also very expensive to maintain and purchase ammo for.
Guns wont function terribly well in a desert environment either (sand gets into it and gums it up), so that's also a hazard to be mindful of. So there's a serious list of pros and cons to consider. >.<