Overly Complicated Invention #413

Non-Newtonian Bullets.

First, an introduction. Non-Newtonian fluids are liquids that behave in a very peculiar way. Namely, they have non-constant viscosity.

One of the most famous examples of this is Oobleck, a mixture of corn starch and water (dry it at home!). Oobleck gets harder the more force is applied. So if you stab it or slap it, it becomes rigid, but if the force is gentle you can sink your hand in it. For instance, you can run across it if you go fast enough. Or, if pressure keeps being applied, it will build up. Kinda.

So, lets have a thought experiment.

What would happen if a burst of Oobleck was shot at high speed from a pressurised device? The initial decompression would harden the rear of the shot of the liquid, expelling it from the barrel, at which point it would probably return to liquid state. However, when hitting the target, it will re-harden in an unpredictable shape, and then re-liquefy when its transferred the kinetic energy.

Theoretically, this leads to strange shaped bullet wounds, and un-traceable ammunition.

And I, of course, am talking out my arse as I know nothing about physics. Still, it's an intriguing thought...