Why don't modern guns come close to the 85 dB - DeLisle?

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wacki
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Why don't modern guns come close to the 85 dB - DeLisle?

Post by wacki » Sun May 27, 2012 11:42 pm

Seems like all modern guns (w/ integral and screw on suppressors) can only hit ~120 dB. Liberty's integral .22 and 300 blackout? Still 120 dB.

Is there anything out there that comes close to the 85 dB of the WWII era De Lisle?

http://en.wikipedia.org/wiki/De_Lisle_carbine
Later, official firing tests recorded the De Lisle produced 85.5 dB of noise when fired.[5] As a comparison, modern testing on a range of handguns has shown they produce 156 to 168 dB when firing without a suppressor, and 117 to 140 dB when firing with one fitted.[6]

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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by Table Rock Arms » Mon May 28, 2012 12:07 am

Its possible that those numbers are a result of improper testing. One of the videos I saw with one of the Liberty integrals showed the noise at around 110 db when dry fired. Hard to imagine that it could have been 25 db quieter than a dry fire.
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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by pierre1631 » Mon May 28, 2012 2:21 am

85 is loud compared to the Welrod- http://en.wikipedia.org/wiki/Welrod 73 dB......
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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by Bendersquint » Mon May 28, 2012 3:35 am

Those numbers are wrong due to improper to modern day standards testing.

We fired an original DeLisle and it metered in the high 120's according to modern accepted testing procedures.

Also think about it, don't you think if they were getting 85dB of sound from(60+ dB of sound reduction) that that it would be still produced anytime in the last 40 years? I think it would have been. They are quiet but not as quiet as people think.

The Welrod is in the same boat we haven't witnessed sound testing for it but it was a shy louder than the Delisle.

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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by Ben B. » Mon May 28, 2012 11:30 am

The Red Jacket .50 upper gets .50 BMG readings at 119 dB, a 20 dB decrease, now that IS a game changer. That's right, the naked .50 BMG meters around around 140 dB, or the same level as most .308 rifles WITH a silencer. What is wrong with all the non-RJ sucky silencers out there?
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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by JasonM » Mon May 28, 2012 12:48 pm

wacki wrote:Seems like all modern guns (w/ integral and screw on suppressors) can only hit ~120 dB. Liberty's integral .22 and 300 blackout? Still 120 dB.

Is there anything out there that comes close to the 85 dB of the WWII era De Lisle?

http://en.wikipedia.org/wiki/De_Lisle_carbine
Later, official firing tests recorded the De Lisle produced 85.5 dB of noise when fired.[5] As a comparison, modern testing on a range of handguns has shown they produce 156 to 168 dB when firing without a suppressor, and 117 to 140 dB when firing with one fitted.[6]
You didn't follow the cite?

Those numbers are from tests in 1943-44.

they also found the silenced Sten to be 89.5dB suppressed and 125 UNsuppressed.

The unsuppressed number is about 35-39dB low, so we can assume the real suppressed Delisle was at least 120.5-125dB.
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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by strobro32 » Mon May 28, 2012 1:59 pm

This is all they had to measure with in 1944.

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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by doubloon » Mon May 28, 2012 6:42 pm

I recall at least one person recently measuring below 90dB unsuppressed with modern tools.

viewtopic.php?f=2&t=84773&start=25
http://www.youtube.com/watch?v=BDtd2jNIwAU MUSAFAR!
http://www.youtube.com/watch?v=8CrOL-ydFMI This is Water DavidW
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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by Bendersquint » Mon May 28, 2012 6:52 pm

doubloon wrote:I recall at least one person recently measuring below 90dB unsuppressed with modern tools.

viewtopic.php?f=2&t=84773&start=25
I bet my ITouch could measure it around there as well.

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Re: Why don't modern guns come close to the 85 dB - DeLisle?

Post by doubloon » Mon May 28, 2012 11:38 pm

:mrgreen: :mrgreen:
http://www.youtube.com/watch?v=BDtd2jNIwAU MUSAFAR!
http://www.youtube.com/watch?v=8CrOL-ydFMI This is Water DavidW
Complete Form 1s http://www.silencertalk.com/forum/viewtopic.php?f=10&t=79895

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