Hello, and please forgive me if this is a stupid question, but I was wondering what the difference is between Hollow Point and Jacketed Hollow Point for self-defense. It looks like HP cartridges come about 20 to 25 to a box where JHP seems to come 50 to a box. Is there, and I'm guessing there is, a difference in performance between the two rounds? I'm guessing HP is the better cartridge to use for self defense? Any insights, knowledge, experience and help is greatly appreciated. I'm still new to shooting and the difference isn't readily apparent to me. Thanks!