Someone educate me on bullet grains. What is the advantage / disadvantage of using a 185 gr. bullet over a 230 gr. or vice-versa. How about Plus-P, yes or no ? I'm thinking a 45 acp is going to penetrate soft tissue regardless of the grain. Weather it penetrates car doors or brick walls is really not an issue is it? We're talking self-defense here. OK, I'm all ears, let the lessons begin!