The first shot might well have been a mistake because it was fired at almost 90 degrees to the neck. You may be right Shona... if Sheila had her right hand holding the barrel end to try to divert the shot and his finger tripped the trigger accidentally, before he was ready to fire.
Weren't some of the blood spots found underneath Sheila's body, and like those to the side of her leg thought to be from June as she wandered around the bedroom after being shot earlier on. They look like they have dropped vertically rather than being sprayed.
Only a couple of blood samples from the carpet in the room were taken though, and I don't think any from that region before the carpets were burned, so the spots could have been from any of the three victims.
I have always thought that the blood spots were from Ralph.
I don't think Ralph was ever on that side of the bedroom after having been shot initially as he opened the bedroom door.
It might be that Ralph was still close to his side of the bed (it may have taken him a few seconds to wake up and realise what was happening) when Bamber burst into the bedroom and started shooting. June was shot while her head was still on the pillow.
I agree.. Nevill might have been there initially, getting out of bed when the assailant came through the door and surprised both parents. Most of the ejected cartridge shells were located within the room rather than on the landing (the hatched area indicates where the bullets were most likely fired from) and he may have received those first shots to the left arm and/or mouth on his way round from his side of the bed to confront his son.

The drops of blood too look as if they have dropped vertically from someone standing upright, rather than elongated as they might have been if they sprayed from a spurting wound... so it's possible they came from Nevill.
