A friend of mine....had some unknown powder from stripped down rounds to get rid of. About a half pound.
After consulting the oracles on SD he spread a bit on the lawn but had second thoughts.
Very gingerly put a match to a half ounce or so. Burned steadily. Happy days.
Put rest in a heap and put a match to it.
Whats interesting is that in larger quantities, it really gets going, doesn't it?
Luckily its the side of the shed the wife can't see has got a bit scorched.
Anyway, it needed a lick of paint.