Is the cylinder considered an integral part of the revolver? You could have a pocket full of cylinders just waiting to drop in. Also speed loaders could be used. This is exactly what happens when people who know nothing of a subject try to make laws regarding said subject.
One of the Legislative woman in NJ (missed her name, think it was Beck) made a comment that "I would hate to see a deer or rabbit shot with a automatic rifle". Although I would tend to agree, automatics or rifles are not legal to hunt with in NJ. Semi auto shotguns are. They are probably the most commonly used deer gun in NJ. Once again she will get to make the law.
Concentrated power is not rendered harmless by the good intentions of those who create it.