TAOFLEDERMAUS SLOW MOTION is a Youtube channel located in Central California. http://www.youtube.com/user/taofledermaus
You should try shooting a drill bit or end mill. The flutes on the drill bit or end mill may act like rifling.
I always wondered if these blades were made of a type of spring steel like metal as they are tough as nails, until they are not and they snap off like they are brittle..