*video* Mythbusters: Bulletproof water

[Double Tap]

http://www.***************/?d=3575PQ8G 96.8mb

[Damian]

The download speed is sooooo sloooooowwww (20 Kb\s) :( :( :(

[big_les]

Just keep an eye on the Discovery Channel; a rerun will be on soon enough. Excellent series; I haven't seen this one yet myself but it involves a Barrett as I understand it!

[Double Tap]

involves a Barrett as I understand it!
they use an armalite ar-50

[FINCaesar]

good vid

[scrybe]

Aw sweet, I heard about this and was mad that I missed it. I'll leave the DL going over-night. Thanks for the link.

[-Archon-]

Strictly speaking this video is violating Discovery's copyright of this program. Unless you got permission to distribute it that is.

[epc]

I wish they had also fired the 9mm at the 23 degree angle. They blamed the break-up of the rifle rounds on the high muzzle velocity. I feel the angle of entry might also play a big role, regardless of the round's muzzle velocity.

[bigjeff]

Friggin thrillin mate.Does it hv to potential to be the new material for body armor?

[Beinlausen]

Friggin thrillin mate.Does it hv to potential to be the new material for body armor?


you'd have to run around in a 10 foot bubble all day, so go ahead

[JoaMei]

Friggin thrillin mate.Does it hv to potential to be the new material for body armor?


you'd have to run around in a 10 foot bubble all day, so go ahead

Yea, carrying about 5000 litres of Water(5 Tons) should make you pretty safe. :D

[Herrmannek]

it was quite obvious....
At that angle water worked like a mirror, it reflected rounds from their intended flight path. What was most important rifle rounds that hit the water at such small angle were forcefully deflcted to the side of the bullet and that disintegrated them, with made leftowers to loose energy dirasticaly quicker...

It would be more educating if the would try "round ball" ammo at angle shots(pistol rounds or bal from cap rifle). They would get bigger penetration for angle shots because no disintegration would/should occur, of course hiting the jelly would be still a problem because of strong deflection from oryginal flight path, with is also a great protecting factor...

[Kristos]

it was quite obvious....
At that angle water worked like a mirror, it reflected rounds from their intended flight path. What was most important rifle rounds that hit the water at such small angle were forcefully deflcted to the side of the bullet and that disintegrated them, with made leftowers to loose energy dirasticaly quicker...

It would be more educating if the would try "round ball" ammo at angle shots(pistol rounds or bal from cap rifle). They would get bigger penetration for angle shots because no disintegration would/should occur, of course hiting the jelly would be still a problem because of strong deflection from oryginal flight path, with is also a great protecting factor...

I agree it would have been interesting to see how far the target should be under water with 9mm ball ammo at the same angle.

Btw wouldn't tumbling occur at low angles with ammo that did not disintegrate? Tumbling would reduce the linear kinetic energy of the bullet because of increased friction and rotational kinetic energy component.

[Herrmannek]

Thumbling for the ball doesn't make a difference :) .... and I'm sure .50 cal and 0.30 cal in contradiction to 5.56 aren't designed to thumble so much if they would hit water from 90 angle degree they would easily pass the 9mm...

[JoaMei]

Thumbling for the ball doesn't make a difference :) .... and I'm sure .50 cal and 0.30 cal in contradiction to 5.56 aren't designed to thumble so much if they would hit water from 90 angle degree they would easily pass the 9mm...

Perhaps, but Im pretty sure the impact energy will let normal full metal jackets disintegrate even at 90 degree. Only a massive bullet or armor piercing hardcore will make it.

[ardy]

Thumbling for the ball doesn't make a difference :) .... and I'm sure .50 cal and 0.30 cal in contradiction to 5.56 aren't designed to thumble so much if they would hit water from 90 angle degree they would easily pass the 9mm...All rear heavy bullets tumble. If barrels hadn't been rifled then bullets would tumble in air as well.

To paraphrase, if you have absolutely no idea what you are talking about, then I suggest you don't.

[big_les]

Again, I haven't seen this specific show, but the series is all about taking BS stories and urban myths, or even 'common sense' and testing them in an entertaining way. It's for people that wouldn't encounter bullets hitting water in everyday life but might wonder what happens.

It's not exactly 'scientific', but it beats a group of guys in a pub talking rubbish! Also, they often edit chunks out that would reinforce the result they get, and then in later shows, if enough people write in saying they don't think it was proven well enough, they go back and do it over with new techniques. They did that for the cell phone gas station explosion myth for example.

[-Archon-]

Thumbling for the ball doesn't make a difference :) .... and I'm sure .50 cal and 0.30 cal in contradiction to 5.56 aren't designed to thumble so much if they would hit water from 90 angle degree they would easily pass the 9mm...All rear heavy bullets tumble. If barrels hadn't been rifled then bullets would tumble in air as well.

To paraphrase, if you have absolutely no idea what you are talking about, then I suggest you don't.

Yes, all pointed ogive bullets are unstable projectiles and will tumble as long as they are not stabilized by rotation. In theory you could make it stable in water or flesh, but it would require a much higher rotatation.

[Edit: spaghetti fingers]

[Herrmannek]

Thumbling for the ball doesn't make a difference :) .... and I'm sure .50 cal and 0.30 cal in contradiction to 5.56 aren't designed to thumble so much if they would hit water from 90 angle degree they would easily pass the 9mm...All rear heavy bullets tumble. If barrels hadn't been rifled then bullets would tumble in air as well.

To paraphrase, if you have absolutely no idea what you are talking about, then I suggest you don't.

Yes, all pointed ogive bullets are unstable projectiles and will tumble as long as they are not stabilized by rotation. In theory you could make it stable in water or flesh, but it would require a much higher rotatation.

[Edit: spaghetti fingers]
@ ardy Read what I said ..Did I said they don't thumble? I said they aren't designed(considering rotation speed, location of center mass and bullet shape) to thumble so much and so easily as the 5.56... And Considering this I said .50 cal and .30 would pass that 8 feet of the 9mm at 90 degree shot...