In my experince, generally speaking, S&B will throw a larger pattern than many other brands of buckshot.
With that said, I believe we sometimes put too high a premium on tight patterns. If you are a LEO and can only carry buckshot this is important because you may have to launch projectiles outdoors, and obviously accountable for each and every pellet. For the homeowner, IMHO, a load that spreads a little quicker may be a good thing as you have the posibility of putting more pellets into more vital organs of an attacker. At the ranges encountered indoors, I would have no qualms about using S&B.
Just my .02.
Denny