Guns... underwater.

[Cebu_4_2]

I am wondering how far the bullet would travel if it wasn't fired in the water... In water he says 5 feet.


http://youtu.be/cp5gdUHFGIQ

http://youtu.be/cp5gdUHFGIQ

[Glass]

it isn't very far and I think it also depends on projectile type. I recollect the busters of myths did some investigating back sometime in Series 1 -3. To see if diving into water you could avoid being shot. Answer was if you can get about 5 or so feet of water between you and gun you would be ok.

[Cebu_4_2]

it isn't very far and I think it also depends on projectile type. I recollect the busters of myths did some investigating back sometime in Series 1 -3. To see if diving into water you could avoid being shot. Answer was if you can get about 5 or so feet of water between you and gun you would be ok.

My thought was that the gun being in the water it has to displace the water in the barrel before the bullet can come out. Above water it doesn't have such a task.

[Glass]

It would be interesting to see a comparison, fired into water and fired in water.

I think it would be only a couple of feet in it but interesting none the less. Perhaps we could ask the bust-o-mythers to do a revisit comparo for us.

[Twisted Titan]

Its physics.


Like if you pound your fist into the sand it will only displace it but so far no matter how much force is behind it

[Cebu_4_2]

What if you remove the sand before it gets into the water?

[Heimdhal]

What if you remove the sand before it gets into the water?

eventually, you'll hit sand.

Bullets break up and tear apart in the water. Water is dense, much denser than air, of course, just like bodies are denser than air (in which bullets also often break up, deform and/or stop).

Genreally speaking, you get a few inches to a few feet of penetration in water for nearly all bullet types. Rifles tend to get less because their higher velocity breaks them up quicker on impact.

When a bullet is fired IN water, surrounded by it in the barrel, it is not making the jump from air to water, the impact is lessened and the forces exerted on the bullet are more evenly dispersed around the bullet from the start. Going from air to water is like hitting a wall and all the force goes into one area (the part impacting).


There are some really interesting attempts at underwater munitions. Some modern torpedos and other underwater projectiles are using a system that forces an air bubble in front of the torpedo (generated from the torpedo itself). Essentially, the whole thing is actually traveling in a jacket of air, through the water. Air of ocurse has less resistence and density so greater speed and distance is being seen. Just an FYI.