Duane , A great answer to your question is waiting for you at John Linebaugh`s (the custom gun maker) website. Click on his "writing`s" heading and refer to his article entitled " A
common sense look at handgun hunting". In it he brings up John Taylor`s (the African hunter) "knock out" formula which I believe is a better way to gauge a hunting handgun bullets efectivness. http://www.customsixguns.com Good hunting, James