For one thing, you don't have to whack it with a two-pound hammer, the way I do.
Dave
.....
Using the gun with the C-frame works particularly well for dimpling nutplates. I have a set of dies with the female side modified to fit closer to the threaded stub. It takes a couple of medium length pulls on the trigger, but you get much better results than with a hammer (or a squeezer for that matter).
Much easier, and quicker, to simply use NAS-1097 small head rivets with countersunk holes for nutplates.
Nutplate rivets aren't really structural and don't need the slight extra strength of dimpling. They only need to stop the nutplate from turning.