The headline says two wounds to his head. That’s not necessarily two gunshots. It is possible that someone can shot themselves in the head twice. My guess Automatic weapon. Two rapid fire shots go off before his finger falls off the trigger.
Discussion
It would be an extremely rare trigger. Not factory.. you would have to file down some internal parts for a very hair trigger. Or fully (not semi auto) automatic and the odds of him having that is extremely rare.
Usually people with full auto go with AK or AR/M16 for example rifles. A full auto pistol is not accurate and a waste of time.
I will have to find the full article for you stating gun shots.