I don't know anything about amo, please forgive me for my question, I would love to hear everyone insight and advice on this. Thank you in advance. So let say you using a Kel-Tec KSG or shotgun in general. If at point-blank, which are more fatal, slug or 00 buckshot? From what I know at point-blank, buckshot don't even expand much, so it like slug. But then slug penetrate more. If looking for fatal, would expansion matter more than penetration? But I still think slug is better at point-blank. Please help. And wouldn't the 000 buckshot be more powerful than the 00 ones?