BEST 9MM PISTOL FUNDAMENTALS EXPLAINED

I carry an entire measurement services pistol on and off duty. It contains sixteen rounds of 40 S&W goodness. If I expend in excess of sixteen rounds inside a gunfight I have lost.My dad fought in WW II, Korea, and Vietnam. I did two excursions in Vietnam, and my son was a Navy SEABEE. ALL of our ammo about those several years was FMJ, and I am abl