Suppressor ? barrel length vs noise suppression

divebomb

November 04, 2007 08:17

I just got back from the range where I fired my 16" barrel 223 & my 7" barrel 223.

Unsuppressed the 7" was substantially louder than the 16"

Suppressed the 16" was quieter yes, but sounded more like a subsonic 22 round.

The 7" barrel all you could here was the gun mechanism, and the round hitting the target.

Same suppressor different barrel lengths opposite results from suppressed vs unsuppressed..


How does that work?

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  cce1302

  November 04, 2007 09:29

  magic.

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  Nwcid

  November 04, 2007 09:43

  Well it makes good sense to me. The longer the BBL the less unburned powder, the less flash, the less noise. With the short just the oppisit is true.
  
  For the longer BBL there will be less noise to be suppressed. Another point would be how fast the bullet is traveling. I know it makes a difference in .22 as many rounds that are supersonic in a rifle are not in a pistol. I know in short BBL's the .223 is going way slower too, but I am sure is it still supersonic.
  
  I have heard that it is bad to shoot suppressors on the really short AR BBL's as there is so much unburned powder and increased pressure.

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