It wouldn´t be the first time fatally injured people move around. In some cases people don´t even realize they have been shot - saw this crime episode about a man who had been shot early in the morning in his home; he went on as if nothing had happened, even stepped outside to grab his newspaper, then starting to prepare breakfast - then died...
I don´t know, clearly, but could he not have been shot once in the bedroom, then stumbled down the stairs (not saying he didn´t realize as the man described, but sometimes people move around after being shot, even though it seems impossible)?
Hi Alias, I can agree with that.

I read online about an Australian who had shot himself about 4 times in an attempt to commit suicide. He had walked all over the place before he had died form the last gun shot wound. I felt sad after reading it.
Nevill's injuries are 4 shots upstairs and 4 to the head downstairs the 4 to head were all fatal, each shot would have killed him outright.
However, there are only 3 case shells found in the kitchen...all the rest are found upstairs.
Its possible that a shell case was transferred upstairs by one of the raid team...
