I have the Winchester Ranger ammo in my XD-40. It's a hollow point that's designed to maximize the mushroom effect on whatever you hit. You hit someone with it, and the bullet will not likely make it out the other side - the 'perfect' home defense round.
Or that's my humble opinion anyway!
BTW - they come in several grain sizes. I use the slightly lighter 165 grain (or was that 155), instead of the full 180 grains. Personal choice, and hope I never have to figure out the difference between the two of them.