And according to the quote below, it would seem that firearm use isn't all that uncommon, something those here who dote on an Australian style Gun Control idea never seem to talk about.
https://www.nbcnews.com/news/world/family-7-dead-gunshot-wounds-rural-australia-n873301
https://www.nbcnews.com/news/world/family-7-dead-gunshot-wounds-rural-australia-n873301
"Regional and rural areas are particularly vulnerable to these sorts of tragedies, because of the combination of isolation, sometimes mental or financial hardship and easy access to firearms," Less said in a statement.
"Although the details of this tragedy are yet to come to light, Australia has a tragic history of higher rate of gun deaths in rural areas," she added