Well they're being used by the Navy now to shoot down missiles, as far as I know. I think the tradeoffs are that they are super heavy and require a lot of energ

Well they're being used by the Navy now to shoot down missiles, as far as I know. I think the tradeoffs are that they are super heavy and require a lot of energy but they can accelerate projectiles extremely fast. Very useful if you're trying to shoot down something that's also moving obscenely fast but not so useful if you just want to poke a hole in a living target running at 10 miles an hour.