Legality of super bullets

[Sethomas]

So, my gun-shop-owning friend loves to go on and on about the bullets he keeps in the chamber when in public. He calls them something like "blaster (or glaster? who knows) safety rounds" or something, but the closest thing I can find to describing them online is "Hydra Shok". Apparently they're designed to create a hollow cavity inside the body, as to render any central shot lethal. He said that they're necessary because if you don't kill them, they'll sue. Or, if they don't sue, they'll come after you once they're out of prison.

To me, this strikes me as retarded. I personally think that anyone who uses these and kills someone with a shot that might otherwise have not been fatal should be prosecuted for manslaughter. I'm not saying that guns should be outlawed for self-defense usage, but turning them into deliberate killers rather than deliberate self-defenders should be illegal.

Thoughts?