What do you think would be: 1. The best defense round; and 2. The most controlable in the Beretta PX9 and PX45 pistols. The 9mm 147 gr. Gold Dot (985 fps & 317 ft lbs) or the 45acp 230 gr. semi wadcutter Magtech (780 fps & 310 ft lbs). Wanna kill these ads? We can help!