Copying a different bit from the Mojave thread that seems more appropriate here:

>* An "automated" revolver is not the same as an automatic one. It simply means that the cylinder advance and the crane which actuates the cylinder for reloading are servo-assisted, not that the weapon has an automatic fire mode.

Why would such a thing be needed? As you noted, a revolver is turned by the trigger pull, and if a shooter isn't strong enough to do so they probably can't handle the recoil anyway.

Polychrome

If the answer is "Because it's cool" then well, rock on.