Ok, so I conceal carry a full size 20 10mm in the winter and currently use Corbon 135gr JHP that push 1400fps/588ftlbs as my main rounds. But I also have a fear of being carjacked and do a lot of driving in the city which has had its fair share of violent crime and it’s not unusual to have addicts people walking up to your vehicle for change. Armed bank and convenience store robberies that happen locally are a daily occurrence are nothing new so are home break-ins. If I have six Doubletap 200gr WFNGC Hardcast that push 1300fps/750ftlbs and then the 10 corbons in my gun and happen to use it in a self-defense scenario could it be used against me in a totally justified situation? And would the hardcast penetrate my car door better if need be?