I thought tannerite was supposed to be completely safe till you mixed the activator package in with it?
When I was just out of high school, a friend and I were facinated with the the one shot, one exploding car in the movies.
We found an old junk car with about half a tank of gas, removed the tank with the gas in it, and sat it on top of the car.
We proceeded to shoot it with every centerfire we had, 22-250, 6.5X55, 30-06, .357 mag, and .44 mag. all we suceeded in doing is draining the tank. So we threw a match on the liquid, it was definitely gas.
I once read in Precision Shooting of a guy starting grass fires with a 22-250 shooting prone, but I have never started one that way or seen anyone else do it.