Shotgun's spread about 1" per meter according to all sort of videos/testing etc. I know MY house doesnt have a long strait hall in it to really benefit from potential spread. Also if the slug is as accurate as a rifle, why not use a rifle? 30 shots with an easy trigger pull vs 7 slower shots that may malfunction if you dont manipulate the the it correctly in a situation you've never been in before.Buckshot has more of a spread, it's more of the oh @$&@&$ moment and then once on target a slug is as accurate as a rifle. Basically if someone was holding a knife to someone's throat the slug would take the bad guy out and you would need dental records to identify them. The problem with bird and buckshot which many police departments are getting away from is there are pellets going off target and they are going to slugs only.