There was a thread a while back that was about a police shootout. The one officer shot a man with 180 g .40 S&W. Most of his shots only penatrated about an inch. I assume that he was using some kind of expanding bullet. What are your thoughts on using fmj bullets as opposed to jhp. I know that conventional wisdom says that we should use hollow points for defence, but are we sacrificing penatration too much for expansion?