Dr Ed Ashby has dedicated his life to researching terminal arrow performance. If you have done any research on arrow performance you have likely come across some of his work. His extensive research on the terminal performance of archery equipment has helped define lethal arrow systems.  He breaks downs what factors make an arrow most effective.  Structural integrity, broadhead shape, broadhead bevel, broadhead tip design, arrow shaft profile, arrow mass, and FOC are some of those factors.  His research is extensive, thorough, and by shear volume….impressive.  Dr Ashby also spent 4 years researching the terminal performance of the Barnes X bullet during its' development.  He knows what it takes to make an ethical shot on any animal.