well I guess you can get research to justify whatever the person(s)
paying for the research wants justified
Unfortunately for the gun nuts the evidence here in Australia
is becoming quite clear, we had one of those gun massacre tragedies
about 10-15 years ago & a Conservative Prime Minister got all the States together
and introduced major gun control reforms, defying the "right wing" of his own party
we haven't got rid of crime, but it's becoming very evident that gun related crime is
much reduced. We need to do more to stop the illegal entry of guns to Australia.
Another reason things are going well here is that we have had 21-22 years of continuous economic growth & increasing prosperity after we had a lot of economic reform during 12 years of Labour Government in the 1980's- reduction of Tariff barriers, controlled deregulation of Banking & Finance, floating our Dollar, Industrial Relations reform-- Union amalgamations, Award simplification, Wage rise trade offs for Industry based Superannuation, that led to Productivity improvements and an economy better suited to "globalisation"
Unfortunately the Conservatives dropped the ball on reform, productivity improvement
and infrastructure investment so productivity improvement started to slide /reduce about half way through their 11 year run in charge from the mid 1990's to approx 2005 /06
& since then we've had 6 years of slightly chaotic Labour Government
Right now we're about to have another Federal election & the Conservatives should
romp back into power, so they can stuff things up properly again
back to guns, in my opinion, in the vast majority of "domestic rural shooting" situations, (ie non military use ) automatic weapons are required by clowns who are incapable of shooting well
eg if you can't drop a Kangaroo with your first shot with a .303 bolt action rifle
and need to use half a clip or more from a M16 to hit the crittur then you shouldn't be allowed to join the shooting party
My Dad learnt to shoot in the Depression, Grandad would send him out with a .22 rifle with 2 bullets & Dad was expected to bring home 2 rabbits for the pot, if he failed to bring home 2 rabbits then Dad wasn't allowed to shoot for a minimum of a week and had to rely on traps-which is a lot more work & until he got "back into surplus" with the traps, no more bullets. So Dad and his older brother Ian learnt to shoot well & not waste ammunition, something Ian found useful in WW2.