Sometimes they win Darwin awards.

A decade or so back a National Board member of the NRA got into an argument with his wife. She made it to a loaded gun before he did, and shot him dead.

The most common Gun Shot Death Scenario in both Canada and the USA is Suicide, followed by Domestic Homicide and Personal Disputes where at least one party had quick access to a loaded firearm.

Gun Shot Death related to other crimes is a distant 3rd.

The only places in Canada with Gun Shot Death rates close to the USA average Gun Shot Death Rate are Rural and Northern Areas, where every 2nd home, on average, has at least 1 long gun in it.

http://guncontrol.ca/wp-content/uploads/2015/03/moregunsmoredeaths2012.pdf

http://www.huffingtonpost.ca/entry/guns-deaths-car-deaths_us_56991b31e4b0ce4964242c47