I agree that June was tired but the Jeremy supporters want Sheila to have the psychotic incident at the time that fits them,not when Sheila was at the party on the Saturday night,not whilst she was being driven in the car by Colin on the Sunday,not in the shop in Tiptree on the Tuesday afternoon,or not even on the Tuesday evening when they're all sitting round that drab kitchen table.
If Nevill put the gun away(if he saw the gun then why not spot the ammunition also) then it's even more unlikely that Sheila reloaded from scratch without damaging her nails,or managing to keep Nevill at bay with the threat of a loaded rifle,which Nevill did get a hand to as we know from Julie's statement,annoying Jeremy slightly as he had to wipe the gun from scratch. The more I read this case the more I get the feeling that Jeremy just wanted rid of his parents and sod the consequences. It's why he went ahead with the scheme even though Julie knew about it and why he's accepted his sentence for the past 28 years.
That rifle was never wiped as it still had a print of Jeremys' when he'd handled it earlier,,,then there was Sheilas' print,and also those of an unknown male,,possibly Nevilles' when he tried to retrieve it from Sheila. Because we have no times of death,,it's easy to mess about with who shot who,as the possibility is always there that either June or Neville fired that first shot into Sheila.I think the three of them all fought amongst themselves,,with the mother of the twins shooting her boys.
They all shot each other in other words. Were June and Neville tested for residue.? I don't suppose for one minute they were,,because my guess,again,,would be that there would have been signs of lead on both.
Did you read the Colin Norris case,,where the judge swayed the jury into a guilty plea.? That was lack of evidence and a lot of tittle-tattle,hearsay and repeated conversations.The same as Jeremy.