Its your broadheads...could be your veins but something has to be wrong for them to making any noise. But my guess is broadheads. I shoot rage and they make quite the hissing sound going down range. Never had a problem with the sound they make...have harvested deer at 40 yards and in withthem and never a problem. good luck.

No all the blazers I've shot do this. But deer don't know what's going on. No big deal.

Well...?Do you hear hissingwhen you shoot both field tips and broadheads??

He already said that he hasn't shot broadheads yet.