I have been using the Blackhawk Vapor 4000 arrows and have 5 to 6 left with good feathers. I measured these feathers over the weekend and found they were 4", but I could not figure out the degree of offsetor right helical. These arrows shoot extremely well from my setup. If I am going to re-fletch some arrows, how do I know what offset or Helical degree exists on these arrows so I can try and match them? Also, if I need an offset to match these arrows, do I by the Bitzenberger straight clamp or therighthelical?
Thanks!