self defense ammo

lets look at this in practical, and realistic manner. what type of pistol to carry? well, that is a very subjective question, and will be based upon the individual, and their own unique factors as to what is the best choice in pistols for carry purposes. so, i'm not even going to focus on...

Best self defense ammo I need some suggestions for a self defense round in 9mm, I've been keeping Federal FMJ's in my clip and I know FMJ is not ideal for self defense purposes What kind of Self Defense ammunition do you guys carry? or would you suggest? I need some good knockdown power