Ackley a " world class hunter" ?? I think not!! The article on killing power (with which I have some disputes) in his handbook was written by Paul Rosenburg, who WAS a hunter, NOT by P.O. himself!

O' Connor and Keith were, however, and Keith proposed the " pounds-feet" theory, which was momentum centerd. However, I don' t recall that Jack ever really got into this debate. However, he did say there' s no such thing as " knockdown power" !!