I can go actually next-to-silent with an aac 5.56 sdn-6 suppressor and subsonic 223 ammo. It's really just a click and a "ting!" as the metal target is hit. But it's only for close range. Could clear a house out and no one would wake up. But I could never hunt anything with it.
Wow, that's nice. Can anyone make that cool silenced noise they use in the movies, but still be reasonably lethal?
But you can get that silent with the right set up, and still be lethal in a relatively close distance. After a hundred to 2 hundred feet, that ammo drops severely.