That I can use to find what arrow/setup would give me the most KE out of my bow? I think for the first time in my life I am going to give expandables a try this year and wanted to surely get the most out of my bow that I can!
Sorry just realised this should be in the tech section! Mods please remove as I will make a new thread down below!!
Google KE and you will find the formula. If you want a program, you can check into Archers Advantage or TAP. Both are good for helping refine your arrow setup, finding the correct spine, FOC, and your KE.
I have and use OnTarget2, but I think they renamed it as Software for Archers. It can be updated for current arrows/bows and has everything I need and more for all that technical mumbo jumbo.