I can get "Hollywood " quiet with my 300 Whisper AR15, 300 Whisper Contender, 300 Blackout AAC Micro 7, .308 bolt Rem.700, and various .22 rifles and pistols. You have to have subsonic ammo. When I built that Whisper around 12 years ago only JD Jones of SSK Ind. was selling them. It took a lot of R&D to get it to cycle subsonics. Shooting the .308 bolt guns on steel all you here is the gas escaping and ding ( if you hit the steel ). Come to Ponca and try them out.