If NB was on the stairs when he sustained the graze shot, which skimmed his elbow and chest, did the bullet DRH/5 pass through the banisters onto the landing carpet depositing two small blood stains DRH/47 and DRH/49 and then come to rest in the main bedroom? As this bullet didn't actually enter I think it was probably carrying a fair bit of muzzle energy hence the potential to bounce around?
Any ideas about the arrows pointing at DRH/5 and DRH/9?
DRH3 & DRH4 might have been accidentally kicked by June B from where the other casings landed, as she struggled to walk around the bed. Or even from somewhere else in the room!
No idea whether the blood on the upper landing was from NB, or from June B's head shot(s), because we don't know if it was tested.
When I first saw the arrow to DRH5 I thought that the bullet was found under the bed. But having seen the photo taken from the stairwell of the marker pointing to DRH5 hidden in some black clothing/cardigan/stockings, then it was obviously found there. It might have just landed, or again, had been kicked there accidentally... from inside the bedroom, not the landing!
DRH9 and DRH35(x2) also have arrow stubs which possibly merged higher up on the page. If the curved line of DRH5's arrow is extended from where it meets the bed up to the top of the page, then it appears to join the others. Perhaps there was some wording, such as "Bullets... etc." to distinguish them from casings, and the arrow stem(s) and words have later been erased to make the drawing clearer?