Two loads with nearly the same recoil: Hornady 155 XTP 10mm or Winchester Ranger T 230 45. Same platform Glock 29 SF or 30 SF, keeping this simple. Felt recoil as calculated by power factor (PF) is nearly the same. Hornady 155 XTP @ 1,278 fps / 562# KE / PF 198 (.88 momentum) Ranger T 230 @ 874 fps / 390# KE / PF 201 (.89 momentum) Yes, both would work just great for SD, but... Which load has the greatest incapacitation potential against a violent, armed, drugged...ect... human attacker, assuming equal shot placement?