I only tested it at about 10ft or so, and, out of a full choke, it is a very tight pattern. I live alone and don't foresee any hostage situations anytime in my near future. A shotgun wouldn't be my first choice for precision shooting, but it really depends on the situation.
The main reason I use #8 is because it's what I had on hand after my brother gave it to me. If I was buying, I may buy something around #6, but I am not worried about its effectiveness. I am worried about shots going through the two sheets of sheetrock that separate me from my neighbors. I do have a couple of shells of buckshot in the shell carrier that I could pop in if I need something more powerful or to take a longer shot.