The MythBusters The MythBusters

MythBusters Episode 34: Bulletproof Water

Premier Date: July 13, 2005

Hiding underwater can stop bullets from hitting you.

partly confirmed

All supersonic bullets (up to .50-caliber) disintegrated in less than 3 feet (90 cm) of water, but slower velocity bullets, like pistol rounds, need up to 8 feet (2.4 m) of water to slow to non-lethal speeds. Shotgun slugs require even more depth (the exact depth couldn’t be determined because their one test broke the rig). However, as most water-bound shots are fired from an angle, less actual depth is needed to create the necessary separation.

It is possible to do a chain-straight 360° loop on a swing set.


Under one’s own power it is impossible to do a chain-straight 360° loop on a school yard swing set. With help of other pushers, it is possible, although highly difficult, to do a full circle without the chain being straight. A person would need a rocket strapped to himself to do it. A dummy was set up in such a manner; the rocket was able to propel it in a chain-straight 360° loop, but the setup would be too dangerous with a real person.

It is possible to do a 360° loop on a rigid-arm swing set.


A seventh generation circus performer confirmed the myth by doing a 360° loop while Tory, Kari and Grant observed. The others were not able to do the loop, as it consumes a lot of energy.