The one thing I do remember is at twenty yards I could see the rotation in the shaft. Without feathers it had to be the single bevel broadhead causing the rotation.
I remember back afew weeks ago I was checking the speed of my bow with different weight arrows to find the different momenium stats.
With a 1183gr arrow it shot 121FPS. with a 1248gr arrow it shot 119FPS
I doubt I could have even hit the piece of paper with a double beveled head beyond 5 yds.
At twenty five yards I noticed the shaft take a taildown and right sweep not far from the bow. I was shooting into a head wind and feel the headwind had alot to do it. Kind of like the broadhead lifted, causing the tail of the shaft to go down and right. The pic shows that I hit high and left.