Here is some local news coverage with video interviews of the man who defended his shop. The news stories give a fair bit more detail about what happened exactly.
Gun shop owner who shot, killed robbery suspect: 'I had no other choice' | 11alive.com
Suspect killed, another sought in Mableton robbery attempt | WAGA
Gonna be a lot of mellows harshed if it turns out the gun store owner was shooting .38 Super...
Though it's just a memory
Some memories last forever- RUSH- Lakeside Park
Let all the .45 guys not forget the crossroads mall shooting. Where a crazed guy went down several times got back up and still was being crazy.
He was using Winchester STX 230 grain IMO that was the issue if you watch the video the guy was not bleeding out quickly I would assume over expanding and shallow penetration.
I would bet lunch 230FMJ would have stopped it in two rounds!
There is no magic bullet. only skilled shot placement
"I got a shotgun,rifle and 4 wheel drive and country boy can survive!!!"