I have been loading like this for several years and wanted to get some feedback. Currently, I carry an XD40 Service and load the magazines alternating FMJ and JHP. The premise being that I will not have the luxury of knowing whether I will have to take a straight up/no cover shot at an attacker or if I might have to shoot through a windshield or other cover to stop a fight.
Comments...
If by alternating do you mean one after the other or half n' half? Yes most LE use a Winchester product similar to PDX1 called Ranger, goes through car doors, windows, walls, same thing as PDX1 without the sexy nickel plated brass. Honestly, I've never met a cop that was worried about over penetration, and I don't think they care, but they want the stopping power of JHP. If your really concerned about it, I'd load scatter gun style, four or five JHP up front and ball bringing up the rear.
If you have to shoot through cover that you suspect JHP won't make it through, cycle out the JHP or shoot it and you've got FMJ.