The only real advantages slugs offer are ranger over buck shot. Getting hit with a 1 ounce slug is most likely going to ruin your day. However, I'd imagine that it'd be pretty hard to justify a 100 yard self defense shot to the police.
jerry
How is self defense defined in the US. Here in South Africa it is fairly strict, your life must be in immediate danger, this excludes shooting through a door just because a perp is on the other side. Even home invasion is more difficult to argue for a man than for a woman, and somebody loading your tv onto your truck is not considered self defense unless he/she shots at you at the same time, because if they are leaving (even if it is with your valuables) then your life cannot be in danger anymore. I'm not going to argue the point of this law because it gives an advantage to the perps at the expense of law abiding citizens but it is the law after all and you don't want to end up in prison because you fought for your tv.
I would also follow Jerry's advice and go for a lighter load, at close range it won't matter too much anyways.
By the way, that shotgun with the bayonet rocks.
roger