Reading mentions of IPSC Power Factor recently got me interested in the math behind this calculation. A ball of lead a little over an inch in diameter thrown at 60 mph (12 year old Little League pitcher) makes Major, like .45 ACP.
Would it be fair to say that if I threw a lead ball lighter than a baseball it would do all the damage of a .45, and more than 9mm, according to the IPSC system?
Would it be fair to say that if I threw a lead ball lighter than a baseball it would do all the damage of a .45, and more than 9mm, according to the IPSC system?