Ron sent this in an email.
"The ferrule does appear to be a bullet jacket as it is quite long. The blade is not a Howard Hill- the ends of the barbs are different. The head also appears to have been on the arrow for a long time, not like it was changed out at a later date. Is it possible that this is an undiscovered POMAC head? I don't think the blades are helical by design, they just happened to have been bent?"