[bjorn14]

That he didn’t use it on himself seems to me to make the case that he is sane.

Here is a link that says he had 900 rounds.

http://www.norwaynews.com/en/~view.php?72T9454PI54827A285Lgg844RJ2887R776Gym353J8Q8

[Hardraade]

So when the police arrived, after having stumbled around for a while, he didn’t have ammo handy but would have to return to his stash?

Because he just surrendered immediately.