Chap, A .45 muzzleloader shooting a 128 grain PRB has killed hundreds of thousands of whitetails when this country was being settled. .45cal and under. Davy Crocket didnt use no big bore rifle in his days. Back then, those people depended on their rifles for defense and mainly for putting food on their tables.

FPS/ Ft lbs energy mean nothing to me. They are just numbers. I prefer to stick with the history the PRB has made in this country and other countries.