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Old October 4, 2012, 08:18 AM   #1
chrisintexas
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bullet calibre and noise decibels

what is decibel noise level from different calibre bullets?
thanks
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Old October 4, 2012, 08:25 AM   #2
Stressfire
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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
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Old October 4, 2012, 11:09 AM   #3
CPO15
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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.
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Old October 4, 2012, 11:18 AM   #4
rclark
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.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 ).
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Last edited by rclark; October 4, 2012 at 04:35 PM.
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