[mrmincent]

There was a study released on the effectiveness of the gun reform in australia after Port Arthur, with a pretty clear result. In the 18 years prior to the reforms, there were 13 mass murders, and in the 10 years from the reforms to the study's publication, zero mass murders. People will take what they want from that sort of data (one person basically told me that the study was unreliable because it didn't take into account lead poisoning), but hopefully it might be useful to some.

The study is available at http://tobacco.health.usyd.edu.au/assets/pdfs/Other-Research...