I have multiple 22 suppressors and guns and they are by far the things that get shot the most. I can shoot without having to wear hearing protection.
I'm not sure about this, all the suppressor tests I've looked at are in the ballpark of 160db unsuppressed, 130db which is still well above the threshold for hearing damage. Although suppressed is below the threshold of pain, its well above the ~90db limit for occupational noise exposure.
Here is an interesting link. http://www.hearingreview.com/issues/...2007-03_06.asp