Just a thought on previous posts regarding "failure to stop". It seems a lot of people are blaming the caliber, without giving any thought to the bullet selection. For instance, in the .357 Mag. we have many choices. A 125 gr. JHP, a 125 gr. JSP, 125 gr. "Golden Sabre", 158 gr. JHP, 158 gr. JSP, just to name the most common. If your biggest fear is a 6'5", 275 lb. drug-crazed bad guy, then maybe penetration is a must. There's NO magic bullet! Shot placement and bullet selection seem to be the best answer. (Yes, some police agencies dictate the choice!)