bullet calibre and noise decibels

[chrisintexas]

what is decibel noise level from different calibre bullets?
thanks

 

[Stressfire]

http://www.freehearingtest.com/hia_gunfirenoise.shtml

There ya go

IMO (i.e. - not scientifically proven, to my knowledge), however, gun design makes a difference. For example, my Beretta 92 seems to be a lot louder than a 9mm 1911 due to its open slide. Then again, it might just be a matter of perception

 

[CPO15]

That's amazing: how little difference in the center fire handgun data. Even with hearing protection at my indoor range, I'd have thought a much wider range of noise.

 

[rclark]

.357 Mag, 164.3 dB
.45 Colt, 154.7 dB

Might seem small different but this means .357 is 10 times louder than .45 Colt. That is not a 'small' difference. Remember a difference of 20 diff means 100 times as loud, 30 diff means 1000 times louder as this is on a log 10 scale ( Decibel definition ).