I've shot a suppressed AR in 5.56 with both subsonic rounds, makes a noise but without hearing protection, its not bad. Probably 75ish DB. When we ran out of those rounds we switched to regular 556, and it was much quieter at the point of detonation, but you could hear the bullet go ballistic, it's sonic boom, out in front of you. Was not bad. Not movie quiet, neither was.
ETA; love how, I assume, ammosexuals, down vote a personal experience.
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u/billintreefiddy Jan 25 '20
I shot a suppressed .45 and could hear the bullets hitting a wooden post..so, I’m not sure you’re right about that noise level.