I once had to take the 12 gauge out and interrupt some car clouters Being quiet while I racked the first round was a challenge.
Haven’t messed with #4 buck. OO at 60 yard will go through a deer’s lungs and lodge against the hide. Either one, inside 30’ should do the trick.
From what Ive heard from my nephew they alternate 00 and slugs in Alaska for bear issues flying in the back country. I figure #4/#3 buck, first two rounds then 00 for the distance issues of course this is for two legged animals.