I'm sure someone could figure out a way to do this. And I'm equally certain that in a black market economy someone would in fact manage to manufacture or re-manufacture primers. But I'm not messing around with this idea any more, and strongly recommend that no one else try it either.
Leave primers to the arms makers and career criminals to mess with. I guarantee they're deadly to attempt to improvise.
*Image here is Death's Head, in play pirate booty, by Evan DeArmond, 2011