Word of warning, slugs will penetrate solid brick walls. I have done it myself at my uncles old abandon farm house when we shot the fireplace chimney and we were amazed that the slugs went all the way through and blew a nasty size hole on the other side.#4 birdshot to nock them down/scare them
#4 buckshot to probably kill them if they aren't obstructed
00 to kill through things
slug in case things get awkward like in a room with other people/behind cover shooting at me.
I keep a round of #4 buckshot ready to go, with 4 rounds of 00, first one of that is Hornandy TAP then hunting loads, speed feed holds 2 hunting loads 2 slugs.
I of course mantain cruiser ready.