As a young child I watched an old guy fire a shot gun. He'd 'done something' to the shell / casing .. .I don't know what. After the 'boom' - a smouldering hunk of 'something' landed a little way off. He raced over , picked it up and applied it to pre-readied kindling: Hey Presto = 'Fire/ flame' from a shotgun. Any one got any suggestions of how to do this?