You're throwing the term "assualt rifle" around like that has any actualy meaning. It appears that you are referring to fully automatic weapons?
Yes. No need for them IMO
How many of these mass shootings have involved fully automatic high capacity weapons?
This is more what I am referring to. Semantics be damned KSU-W
but to answer the re-phrased question: 50%
http://www.motherjones.com/politics/2013/01/high-capacity-magazines-mass-shootings
A 50% reduction in mass shootings would be amazing. Hell at this point I'd even take a 30% reduction since the argument is that "criminals gonna criminal"
I'm not usually one to quibble over semantics - you specifically mentioned not needing guns that can fire 700 rounds a minute, so I naturally took you to mean banning automatic rifles. That's an important point, becuase I can't actually think of a mass shooting that involved an automatic rifle. I have seen a lot of people who seem to assume that an "AR-15" means "automatic" and can spray bullets everywhere.
So anyway, if you want to talk about magazines, it is true that at least some mass shootings involved magazines that held over 10 bullets. But are you really going to tell me that those shootings wouldn't have occurred if we had a law that limited magazines to 10 bullets or less? Or that fewer people would have been shot? That's rank speculation at best. It's not hard to swap a magazine, and if you're really set on killing a bunch of people to the point where you would bring a "high capacity" magazine, I would think you could just as easily practice swapping the damned thing out. So in summary, it just seems like a rather pointless gun control measure.
I'm not interested in getting into an Edna-level slap fight over it, though.