What does Senator Leyonhjellm mean by "no difference to firearms violence, gun violence overall", from the above post?
Melbourne Institute Working Paper Series
Working Paper No. 17/08
The Australian Firearms Buyback
and Its Effect on Gun Deaths
"University of Melbourne researchers Wang-Sheng Lee and Sandy Suardi concluded their 2008 report on the matter with the statement, “There is little evidence to suggest that [the Australian mandatory gun-buyback program] had any significant effects on firearm homicides.”
“Although gun buybacks appear to be a logical and sensible policy that helps to placate the public’s fears,” the reported continued, “the evidence so far suggests that in the Australian context, the high expenditure incurred to fund the 1996 gun buyback has not translated into any tangible reductions in terms of firearm deaths.”
A 2007 report, “Gun Laws and Sudden Death: Did the Australian Firearms Legislation of 1996 Make a Difference?” by Jeanine Baker and Samara McPhedran similarly concluded that the buyback program did not have a significant long-term effect on the Australian homicide rate.