I use 4 2-1/5 feathers with a full right helical ( cant hardly see the helical) I get very good flight as my field points and broadheads have the same point of impact out to 35 yds which is where my Keller pendulum bottoms out. My protec is set on 50 lbs for hunting. (unable to pull heavier weight due to nerve damage in neck) GGBH