posted on Oct, 12 2004 @ 05:01 PM
An ice bullet would be nice....
But I can think of numerous reasons why it won't work:
1. Its density is too low. A bullet which is supposed to travel far must be as heavy as possible for a specific cross sectional area. This is called
sectional density and it affects the most important factor in the bullet's trajectory (air resistance) besides gravity. A light bullet will lose
velocity too quickly.
2. Water is gaseous at the temperatures it experiences during supersonic flight. The shape of the bullet is very important at high velocities. At 900
m/s, a 5.56x45 Nato bullet for instance gets as hot as 200°C at the tip because the air is compressed a lot (this is less extreme at subsonic speeds).
The evaporation of the tip would cause the bullet to tumble and miss the target.
3.While in the barrel, the torque that is exerted on the bullet is tremendous. It will be lower for a less dense bullet but still, the grooves are
engraved into the bullet's surface. Ice is very brittle and it would shatter immediately and never make it to the muzzle in one piece.
4.The temperature inside the barrel is too high. If you take compressed air, you won't reach high enough muzzle velocities. Let alone the force due
to the acceleration.
You could use the ice bullet along with a pneumatic gun at close range and subsonic bullet flight. I think the bullet would make it to the target, but
I doubt it would penetrate a skull. The bullet would have to have a shape that is stable by itself since rifling won't be possible, increasing air
drag even more. I also doubt it would be accurate up to more than 20 or 30 metres.
If anyone manages to make a working ice bullet, I'd be glad to hear about it