Flame or flash is indicative of a blank? I don't agree. I've seen flame or flash come out of handguns plenty of times and don't recall that I've ever seen a blank fired, only live rounds.
Only reporting what I have read or should I say studied about the JFK, MLK, RFK assignations. As one other poster has said there were more evidence of bullet holes than were capable of shells that were in his gun. They called them magic ricashaes just like the magic bullet that produced 7 wounds on JFK and the Governor Conley.