There was a fire next door from my house. And I wanted to know if they were required.
The Myth Busters are good at one thing. Making things look flashy. As far as gun go they know nothing absolutly nothing. I can not count how many times I heard them mispronouance m-1GARAND not Grand. They were shooting into water from two to three feet away. This about bust there myth busting. How often are you shooting into water from 3 feet away? NEVER. That is just one of I do not know how many gun myths they have screwed the hell up. So for my life I will not trust two yahoos from the PRK. I would not want to be getting shot at in the water at any depth. So do not try this at home.
This was done on Mythbusters several months ago. I don't remember the exact distance that the bullet traveled in the water before became harmless but it was a surprisingly short distance. I seem to remember it as being something like 3 or 4 feet. They did some underwater photography of the bullet hitting the water and it very rapidly slowed down and then just dropped harmlessly to the bottom of the pool.
8 to 12 the impact of the bullet against the water causes it to be harmless rapidly.*
Look up homebrew supply in your yellow pages. I also think you mean fruit press, but the presses used for apples are normally not the same ones used for grapes. Apples are usually ground into pulp, placed in strong cloths, and then the cloths are folded in on themselves inside a frame. The frames are stacked up and then the press plate comes down and squeezes the stack and the juice is partially filtered by the cloth. Grapes are crushed and fermented if they are red, then pressed. Or, they are pressed as whole clusters if they are white. Either way, it's usually done in a basket type press with wooden slats arranged vertically to form a basket. The juice flows from between the slats.
God I hate when anyone cites an episode of myth busters to answer anything. That's not science, it's entertainment. There is no blanket answer to bullet penetration and lethality in water. It all depends on the construction of the bullet, speed at impact and angle of impact. You can certainly count on it retaining a great deal of energy for a foot or so for large caliber pistol bullets, more for smaller diameter projectiles with greater mass. In my own personal experience a .45ACP fired into a water trough at about a 45 degree angle passed through two feet of water and struck the bottom hard enough to slightly deform the bullet nose without noticeably effecting the concrete surface of the trough.
