[ARCHIVED THREAD] - Mythbusters wrong. (Page 1 of 2)
Posted: 11/5/2007 2:42:46 AM EDT
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Ok the myth...water stops a bullet and if you are being shot at diving underwater will save you. The first shot a 9mm into a tank, straight down into ballistics gel, 12" thick. No penetration after 6 feet, (maybe 8 feet). Then they tried a shotgun, slug...pressure blew the tank apart...LMAO...  but did go through the gel at 6 feet.so they set up a rig, in a pool and set the target (the 12" thick gel) at a 23degree angle. Black powder .45, 1000FPS made it 5 feet to the gel. AR15, .223, round turned to dust 12 inches after it hit the water. M1 Grand, .308 round turned to dust after 14 inches. .50 cal........round turned to dust after 25 inches. Excuse me...don't they shoot into a tank of water at an angle to identify rifling marks when comparing rounds to those used in crimes? they say the myth is true, faster rounds explode / turn to dust / break apart inches after hitting the water...even the big .50. but shooting slower rounds, like the 9mm directly down into the water "may" penetrate up to 6'. |
Diving into a pool or lake might save you (depending on whether you can equalize your ears...I can't  ) but within a minute or two you are going to need to come up for air....so what's the rush on the shooter's part? How many can't afford to just wait?Now I agree if it's a question of being shot NOW for sure or having the chance to get away by diving in a lake/river/ocean and then reversing course underwater and swiming under the bad guy's boat or going low and slow for 100' or more before coming up briefly and doing it again....I'd pick the latter.  But just jumping into the deep end of a pool to 'get away' is pretty stupid. IMO.  |
did you see the one where they had her wear a skin tight leotard so they could take a picture of her butt....  man she is hot. back to the question...dont crime labs shoot into water so they have a round to compare for ballistic tests? |
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| I've seen that episode. Maybe I'm missing something but how could it be wrong when they showed it happening? Granted they would have to try different make/model ammo in each caliber etc to be completely scientific about it all but the fact remains that the camera didn't lie. I'm not up to speed on bullet comparison methodology, perhaps high velocity rounds are fired into a different medium. Or maybe they just can't do comparison tests on HV rounds... |
Ok so how do they get a match for a long arm bullet? If the shoot into gel it will break up too....or will it? |
Well first off, I have shot at things under water at over 3 feet and hit bottom. secondly, They must shoot into something at the crime labs, you can't say a gun fired a bullet without matching it up. either the case has to match or the rifling. |
Just a guess, maybe they down load the pressure to keep them below the frag velocity? |
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The design of the rifle bullets is the problem. They are shooting military ball out of the rifles, the design of the bullets is so that they yaw and break apart after a shorter distance in the water. The center of gravity on a spitzer type bullet is more towards the rear of the bullet. When it hits something soft, like water or tissue, it tends to yaw and break apart at the weakest part which is the crimping groove. The 9mm pistol bullet and the shot gun slug have more mass located forward and are resistant to yawing thus they penetrate more. Load a round nose big game bullet and the results will be different for the rifles. |
Of course 
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Thanks Freehand! I just saved those pics before the MOD's steal them for their own use! |
Google can be your friend! Why don't you click this link? : Kari Byron |
stop watching so much TV. CSI is NOT real... |
Is that the episode where they tried to show that some women REALLY do like to be spanked? |
POW! Nice pooper Kari! |
Silly you..... every time I put ANYTHING made of lead into water, it ALWAYS hits bottom. Even if the bottom is a mile from the surface!
So why are you hanging out on ar15.com???!!!!
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Very nice, somehow I missed that episode. 
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www.snailtraps.com/ No water, just spins round and round until it loses enough momentum to fall out the bottom. |
And scuff the hell out of the bullet, making comparison difficult. Back when I worked for a department that did this, they had what amounted to a "Box O' Truth" filled with oiled sawdust. I have no idea why it was oiled, but it was. |
I read it in the ammo forum, so it must be true. 
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How in the hell do you think they recover bullets when testing them in crime labs? I've seen it done in real life on investigative shows. 
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Do you see them firing a high powered rifle into that tank at point blank range in those tanks, or just pistols? I can't see a crime lab tech firing a M1 Garand at a small tank of water from less than 2 feet..... |
They didn't turn to dust, but they did break up into small pieces. What's horseshit about it? They fired the rifles into a pool, in front of a camera, they recovered tiny fragments of bullets. It's the results they achieved. Do you think they faked it? Now, they fired their weapons at an angle at pretty much point blank range into the pool, which isn't realisitic. Their methods of firing skewed the results of a typical real-life scenario.... |
Wow, I can smell the BO from here. |