'Shotguns have dkb/dbt' - where did that myth (?) come from?

[Icelander]

Originally Posted by Biker Matt

sorry to say, but my roommate's a marine, and he's shot a 9mm into a plastic milk carton and had the bullet bounch off!

Eh, yes?

I'm hard-pressed to find the relevance here. Do you mean that because implausible things sometimes happen in the real world, there is no point to scientific research?