i have looked at shotgun barrels in a number of online places. The only barrels I have seen that were ported were 24" or longer. Is there a practical reason for this, i.e. complete combustion of the gunpowder needs the longer barrel without ports? I have never shot a shortie, but i love the idea of being able to put a dozen into my mb and use it for defense around the house and utility building. I have not shot a shotgun very much, but i can see where having less muzzle rise would be a great advantage if you are in a situation that you have to fire a couple of times in rapid succession. I am interested in firing shortie slugs up to 70 feet or so.