cylinder should be good enough. only takes one to stop a rabbit. full choke decimates em with bb loads. the times i use a 12 gage on rabbit i use #7 shot that you typically use on skeet. rabbits are super thin skinned.
but im far far far from a shotgun expert
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent