Hammersley said there were only two drops of blood on the landing, and none on the stairs.
Drops on the stairs means nothing. Espescially two drops.
Nevill had an easy exit from his side of the bed & out of the bedroom door.
With Sheila shooting 9 times from June's side of the bed, and Nevill already awake & moving only recieveing 4 shots (2 torso) there was no time for Nevill to bleed onto the bedroom carpet.
It was a rifle for shooting rabbits. Not a shot gun.