That thing would discovered my love for .308...
No need to put holes in twenty floors below. .22WMR works fine. CCI sells .22WMR with a Swamp People logo on the box.
Even says choot em! on the box with embossed raised alligator texture.
“...That thing would discovered my love for .308.......”
At close range, I think you could probably use something a lot less powerful and likely to over penetrate.
Not much that would stop a bullet that enters an eye or ear socket from reaching the brain. Of course if you missed the alligator might get pretty upset.