OK Shooting a 43#@28" BW Recurve. 43# due to rotator cuff problems some years back. What would be the absolute MINIMUM poundage needed to KILL a Cape Buff?? All things as shot placement arrow and broadhead wieght are already considered perfect. Keep in mind that training /practice with heavy poundage will most likly result in shoulder damage. What is absolute minimum to still be in the game?