No, he fired it once.
He claims it was a freak accident. Did he know the victim? Was he aiming for her for some reason? The details aren't as straightforward as I thought.
Actually the shooter claims that HE didn’t fire the gun at all. This would have left him vulnerable to a conviction on involuntary manslaughter charges. He says that the gun just went off by itself. This is probably why he changed his story from shooting at the seals which would have meant that he actually pulled the trigger. The whole trial is a travesty of justice.