Sarcasm is not really appropriate.
None of us even know where the rifle was because the family said neville would have put it away . Shame he did not have a locked gun cupboard . Perhaps then none of this would have happened.
Does not matter where the rifle was. It was not locked away that is what everyone agrees with.
If Nevill was awake he would not have let Sheila out of his site if she was being agressive. So she would not have had the opportunity to set herself up with the rifle.
Nevill watching the TV test card or having a shower at 3am is a no go. Nevill would have been shot first downstairs or in the shower room.
Nevill sleeping matches the evidence. The opening 9 main bedroom shots being from June's side of the bed. But then surely it is then too late to then ring Jeremy.