I read the study several years ago. Glad somebody finally did the work to get the whole thing on-line so many more people can see it and judge for themselves. Hats off to the folks at Tradgang.com for doing it.

Before reading this, my opinions were formed by reading about the experiments Fred Bear did shooting a ballistic pendullum with all weights of arrows back in the 30' s and 40' s. Heavier arrows swung the penduluum further than light arrows, so they obviously hit harder than the light arrows.