Firstly, the style of the rifle has absolutely no merit in discerning its effectiveness. The only difference between an AR-15 and a semi-auto hunting rifle is its appearance. Secondly, it takes less than one second to reload and get back into a firing position. Ten rounds or thirty rounds doesn't matter. The amount of magazines would be more important, not the individual magazine capacity. Also during the Clinton AWB, criminals were very seldom arrested carrying "approved" magazines. Most of them were carrying the standard 15- or 30- round magazines. Also, loading up a new magazine every ten rounds is very annoying and tedious when you're at the range. Thirdly, Adam Lanza illegally acquired his weapons. He murdered his mother and stole them. She was irresponsible for not having them locked up, but that doesn't change that fact that the guns were still illegally acquired. Adam Lanza tried to purchase a gun multiple times, but was denied every time because he failed the background check every time. The gun shop owner (FFL holder) is required to do a background check for every sale. This isn't a gun problem. It's a problem with mental healthcare in this country. Mental healthcare isn't readily available to detect and treat the mentally disturbed. Fixing mental healthcare would do a great deal more to prevent shootings than instituting another "assault weapons ban" or "magazine ban." It would also be possible. Logistically, there is no possible way to get rid of all the weapons and magazines already in the US. Other countries that outlaw firearms have never had 300,000,000 firearms legally owned. If there are 300,000,000 firearms legally owned in the US, how many magazines do you think there are?