Where does sound of a firing a gun come from?

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Running Arrow Bill
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Where does sound of a firing a gun come from?

#1

Post by Running Arrow Bill » Wed Jul 10, 2013 2:43 pm

Am curious. If one fires a gun inside of a vehicle or building, BUT the muzzle is outside of the structure, is the sound about the same as if you fired it in the open, outside? Thus, the sound comes from the muzzle, not the rest of the gun??

The practical point is that if someone shoots a predator inside their home, I imagine that one would be DEAF for a while due to the percussion effects.

Anyone have any real information on the above?

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Re: Where does sound of a firing a gun come from?

#2

Post by puma guy » Wed Jul 10, 2013 2:54 pm

Running Arrow Bill wrote:Am curious. If one fires a gun inside of a vehicle or building, BUT the muzzle is outside of the structure, is the sound about the same as if you fired it in the open, outside? Thus, the sound comes from the muzzle, not the rest of the gun??

The practical point is that if someone shoots a predator inside their home, I imagine that one would be DEAF for a while due to the percussion effects.

Anyone have any real information on the above?

Thanks,
Bill
I can only tell you that I know for a fact shooting from my blind with the muzzle outside the structure is far, far less loud on my ears than if the muzzle is inside. Inside a building the sound bounces back.
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Re: Where does sound of a firing a gun come from?

#3

Post by Gunner4640 » Wed Jul 10, 2013 2:56 pm

Running Arrow Bill wrote:Am curious. If one fires a gun inside of a vehicle or building, BUT the muzzle is outside of the structure, is the sound about the same as if you fired it in the open, outside? Thus, the sound comes from the muzzle, not the rest of the gun??

The practical point is that if someone shoots a predator inside their home, I imagine that one would be DEAF for a while due to the percussion effects.

Anyone have any real information on the above?

Thanks,
Bill
As long as the muzzle is out of a confined area the sound would be the same, except for echos etc if you're around buildings etc. Yep the sound comes from the muzzle end only. I've never fired indoors without being hearing protected. But have fired outside without hearing protection. Also in the heat of the moment I doubt you would even hear the shot indoors with (adrenalin - sp?) flowing cuz you would be focused on the BG. just my opinion. :txflag:
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Re: Where does sound of a firing a gun come from?

#4

Post by Panda » Wed Jul 10, 2013 2:58 pm

Rapidly expanding gasses cause the noise.

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Re: Where does sound of a firing a gun come from?

#5

Post by The Annoyed Man » Wed Jul 10, 2013 3:06 pm

Panda wrote:Rapidly expanding gasses cause the noise.
Nope. It's from the little "tick" of the firing pin against the primer. :mrgreen:
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Re: Where does sound of a firing a gun come from?

#6

Post by puma guy » Wed Jul 10, 2013 3:06 pm

Panda wrote:Rapidly expanding gasses cause the noise.
If the projectile velocity is above 1126 fps there is also the sonic boom.
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Re: Where does sound of a firing a gun come from?

#7

Post by android » Wed Jul 10, 2013 3:17 pm

On a rifle with the bolt close, the brass expands slightly and basically seals the breach momentarily, so most of the sound pressure is out of the muzzle.

Revolvers have the cylinder gap, so you will get sound from there and the muzzle. That's why it's stupid when you see suppressors on revolvers in the movies.


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Re: Where does sound of a firing a gun come from?

#8

Post by esxmarkc » Wed Jul 10, 2013 3:18 pm

Man I can tell you from experience that if you are 16 years old and driving down a dirt road and stop, lean over, roll down the passenger window, get your borther's .44 mag out of his glove box and sit back up in the driver's seat, aim said .44 hogleg at said armadillo for 5 minutes and set that canon off at said armadillo with the muzzle well inside the truck cab you will miss said armadillo by 10 feet and you will walk around for a week going:

Is that the phone? I think the phone is ringing. Someone get the phone. Someone at the door? Izzat the doorbell again? I hear the ice cream truck!
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Re: Where does sound of a firing a gun come from?

#9

Post by DoubleJ » Wed Jul 10, 2013 4:01 pm

I'd say from Shooting IDPA matches that it's still pretty loud, no matter what side you shoot outta!
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Re: Where does sound of a firing a gun come from?

#10

Post by 03Lightningrocks » Wed Jul 10, 2013 11:33 pm

puma guy wrote: I can only tell you that I know for a fact shooting from my blind with the muzzle outside the structure is far, far less loud on my ears than if the muzzle is inside. Inside a building the sound bounces back.

Hahaha... I made the mistake of having the muzzle inside my blind ONCE, and only once. Never again!! It was so loud, I thought I had shot myself...LOL.

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Re: Where does sound of a firing a gun come from?

#11

Post by TexasGal » Thu Jul 11, 2013 1:55 am

This thread reminds me of the argument for not using a 357 for home defense. Shooting it indoors in the dark leaves you deaf and blind. Of course it's ok if you ascribe to the one shot does it theory. :biggrinjester:
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Re: Where does sound of a firing a gun come from?

#12

Post by Dave2 » Thu Jul 11, 2013 2:04 am

Mostly from gas expanding out the muzzle end and the sonic boom of the bullet. If you're shooting a semi or full auto, there's a bit of sound from the action cycling, but I've read that it's not too loud.
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Re: Where does sound of a firing a gun come from?

#13

Post by LTUME1978 » Thu Jul 11, 2013 12:16 pm

Amen to the sonic boom. I got a chance to go with a friend to Bayou Rifle and shoot at 1000 yards. One person sits in the pit and marks the target after each shot while the other shoots. It is amazing how loud the bullet is when it passes by even at 1000 yards, had to have my ear plugs in even in the pit.


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Re: Where does sound of a firing a gun come from?

#14

Post by alvins » Thu Jul 11, 2013 5:20 pm

which is why i enjoy my supressors.


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Re: Where does sound of a firing a gun come from?

#15

Post by talltex » Thu Jul 11, 2013 5:25 pm

esxmarkc wrote:Man I can tell you from experience that if you are 16 years old and driving down a dirt road and stop, lean over, roll down the passenger window, get your borther's .44 mag out of his glove box and sit back up in the driver's seat, aim said .44 hogleg at said armadillo for 5 minutes and set that canon off at said armadillo with the muzzle well inside the truck cab you will miss said armadillo by 10 feet and you will walk around for a week going:

Is that the phone? I think the phone is ringing. Someone get the phone. Someone at the door? Izzat the doorbell again? I hear the ice cream truck!
:iagree: As teenaged boys, we used to go out at night and shoot jackrabbits while driving around the dirt roads ( yes, it was illegal to road hunt even way back then...just another example of my misspent youth)...no problem with .22 rifles...decided to pop one with .357 mag revolver one time--got muzzle and cylinder gap blast...that was the ONLY time!
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