It is cordite for sure---we used to get it
out of .303 cases when we were kids.You can
do lots of cool stuff with it too.
If you tape a string of it together you can
detonate small bombs of pottassium chlorate
sulphur and charcoal--scares the **** out of
elderly neighbours and animals---mind you we
wouldn't do that now would we?
When I was a kid Australians used to be able
to set fire to anything they wanted to--just
to see what happened--It's lucky we survived.