Ice Bullet not possible!, page 3
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reply posted on 12-10-2004 @ 05:01 PM by SocialistOrder
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


reply posted on 31-8-2007 @ 06:00 PM by Boondock78
i dig the mythbusters and all but just cause the pair of them with their tiny team couldn't do it don't mean it can't be done..
the mythbusters are a sight different than some military think tank or some small scale manhatten project type deal.

i would think it could be done.
they can make a nuke but they can't make a melting ice projectile? i'm not buying.

i also think sometimes the mythbusters do set things up to fail.

did anyone see the one where they were firing bullets into the water to see if you could dodge bullets in teh water?
they fired all kinds of rounds, even a .50 cal into the water and ALL the bullets burst into fragments within like 3 feet of the top of the water...
every single one.

i'm thinking water is pretty strong then eh....

what about cryofreezing?
i am thinking something along the lines of this and mind you, i am not smart.

instead of say carving out the shape of a bullet in an ice tray and use that, you use lasers or plasma(probably lazers) to machine out the bullet casting and make it out of some insane material..
get the water going and compress it or something...put it under a lot of pressure and then blast it to instantly freeze it?
then, dip it in something....

you know...go through the motions.
maybe alter the way the rifle fires somehow or alter the barrel so micro bursts of something to cut the heat down would be sprayed on the bullet keeping it 'cool' and then it has say, 5 seconds till it melts after beind fired.

i don't know....all i am using are my thoughts but my brain is telling me there is some sick stuff out there and an ice bullet seems possible.


reply posted on 3-7-2008 @ 07:32 PM by Nookster
reply to post by mig12



I think it's a function of how cold you make the ice; it would take a lot of heat to bring a bullet from say liquid nitrogen temperatures to 32F in a short time. Liquid nitrogen is cheap and relatively easy to obtain and transport.
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