“But all single action revolvers must be cocked before they can be fired. “
Most every gun has to be cocked before firing.
My Smith and Wesson semis don’t have to be cocked
.380 backup doesn’t even have a hammer to cock.
“Most every gun has to be cocked before firing.”
NOT
(unless you want to get all pedantic, and consider pulling the trigger as cocking it)
A pistol is automatically cocked when a cartridge is racked into the breech.
A double action revolver can be fired simply by pulling the trigger.
A single action 1880’s replica is a different beast entirely.