According to Malcolm Fletcher the shots NB sustained to his face were fired at a distance of a few inches. I don't see how this is compatible with your theory that NB was shot by the window at the foot of the bed? The casings eject forward and to the right therefore they would fall around the foot of the bed not by the wardrobe?
Holly, I found this article on the position casings can fall.
http://www.forcescience.org/articles/ShellCasingStudy.pdfDuring testimony, “experts” often cite that spent cartridge case ejection locations
from a semi-automatic firearm indicate the location of the shooter based on the
assumption that most spent cartridge cases land to the right and rear of the
shooter. The authors of this study investigated whether spent cartridge case
ejection locations are an accurate indicator of a shooter’s location. Eight different
semi-automatic weapons most frequently used by police officers were used to
collect data from eleven different shooting positions. The results highlighted the
significant inconsistency of the spent cartridge case ejection locations that
occurred across test positions even when several factors including firearm type,
firearm position, and ammunition were accounted for. Of 7,670 bullets fired, over
25 percent of the spent cartridge casings landed somewhere other than to the right
and rear of the shooter where it is commonly accepted they should land. That
pattern inconsistency is significant and demonstrates that determining shooter
location from the spent cartridge case alone leads to only a tentative estimate of
the shooter’s location.