Perhaps this diagram might help:-
Mike
I am afraid your theory is inconsistent with a statement that is dated 7th August 1985 which is the same day as the killings and at a time when everything was still being treated as Jeremy had described i.e. the alleged telephone call from Nevill.
Dr Ian Donaldson Craig clearly states in his statement dated 7th August 1985....
'There was what I took to be a .22 rifle lying across her body with a muzzle pointing upwards towards her head and her right hand lying loosely over the butt. There was a quantity of dried blood which had come apparently from her mouth and what appeared to be an entry wound in her throat. I certified death at 8.44 a.m.'This statement applied to a situation which was, at that time, being considered by all as a murder suicide. Indeed the next day the front pages of the national press proclaimed the events of a murder suicide at WHF in Essex.
The rifle is independently witnessed by a Dr to be on Sheila's body at 8.44am which is the time of Sheila's certified death.
According to your posted bullet point theory please can you explain how a Dr could accurately describe the result of Essex police, 90 minutes later, with a view to framing Jeremy and before the relatives or Julie Mugford had made any statements, moving a rifle from near a window and placing it upon Sheila's body with 'the muzzle pointing upwards towards her head' and her 'right hand lying loosely over the butt'?