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Compressed air trapped in the hollow cavity of SMK ??

 
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  #1  
Old 01-30-2004, 02:31 AM
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Compressed air trapped in the hollow cavity of SMK ??

During this deer season I saw heart-lung damage that seems impossible for the bullet itself to accomplish. I have a theory that is not yet well thought out that much of the damage might have been done by air compressed in the nose of the bullet and released as expansion began.

Am I completely out of left field? Of course, I do not have any idea the pressure the air is compressed to or the volume of air contained at whatever pressure is there. But.....A truck tire exploading somewhere before reaching 110 psi kills the maintance man. A SCUBA cylinder exploding somewhere before 3000 psi destroys a dive shop.
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Old 01-30-2004, 06:51 AM
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Re: Compressed air trapped in the hollow cavity of SMK ??

I think it'd be an issue of available volume... Insignificant for the cavity inside a MK I'd guess.
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Old 01-30-2004, 08:19 AM
 
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Re: Compressed air trapped in the hollow cavity of SMK ??

What kind of damage are you talking about? Bullets do some very strange things when they hit game.
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Old 01-30-2004, 08:31 AM
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Re: Compressed air trapped in the hollow cavity of SMK ??

yea, im with dave on ths one--dont think there is enough room there to save up much pressure.

you may have just taken a chunk of something (skin/bone) thru with the bullet causeing more damage or hit something before entering the animal (twig/grass)


JB
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Old 01-30-2004, 09:32 AM
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Re: Compressed air trapped in the hollow cavity of SMK ??

Probably what you are seeing is the damage caused by "temporary cavitation". There are 2 things a bullet causes as it passes through flesh, 1: a wound chanel, and 2: cavitation. What that basically is, is like a shock wave in the flesh as the bullet passes through. It can actually tear meat and tissue of of bones.

When a bullet causes a 1/2" wound channel, depending on the density of the aniaml and the energy of the bullet, it will cause a 6-16" wound area cause by this cavitation.
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Old 01-30-2004, 09:46 AM
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Re: Compressed air trapped in the hollow cavity of SMK ??

The lungs were probably filled with air, if so their going to popp like a ballon, causing lots of damage, same with the heart if you hit that when its under presure, the heart explodes and so does most of the blood vessels causing causing even the toughest animals to drop instantly.

Brian
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  #7  
Old 01-30-2004, 10:55 AM
 
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Re: Compressed air trapped in the hollow cavity of SMK ??

I have also found that when the lung/heart are hit and turned into jello and the bullet exits there is a vacume effect and some of this jello gets sucked out. One deer I took this fall at 93y with a 140g SST 270 win sucked almost all the lungs out. The far side of the deer and snow were a mess. The explosive affect of some bullets can make a huge internal mess also.

[ 01-30-2004: Message edited by: Harv ]
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