With reference to my more recent posts; I would be obliged to offer a Sheila did it scenario to counter your points, however I would see it as my responsibility to be as thorough as reasonably possible, I don't have that thoroughness yet, do you? I don't think anyone posting here has that thoroughness required to back up our conclusions of guilt or innocence. I've been wondering why people here have clocked up an astonishing number of posts asserting either JB's guilt or innocence. If they were so certain they'd have no need to post anymore. My guess is that it's the fact that deep down the case is still a mystery that keeps them glued to it.
Hoots!
Jeremy picks up the Anschutz he had left in the barn earlier(was this why Nevill was short with Barbara because he noticed a gun missing?) enters by a downstairs window, one he had previously left ajar or which could be prised open with a jemmy without leaving a mark, makes his way to the twins room, shoots them both once each, enters the master bedroom where he blasts both his parents, rushes downstairs to reload whereupon he meets Nevill who has managed to stagger downstairs, they struggle for control of the rifle, during which time the lightshade gets smashed, Jeremy taken aback pumps more shots into Nevill, rushes back upstairs, encounters June in the doorway, shoots her between the eyes, re-enters the twins room where he produces the arc pattern to the heads, opens Sheila's door, leads her to her death like a lamb to the slaughter, proceeds downstairs again where he bashes Nevill with the stock, then prods him with a heated rifle to ascertain his demise, goes back upstairs to stage the death scene but finds Sheila alive, shoots her once again and tosses the bible atop her body along with the rifle,dials his Goldhanger number from the kitchen telephone then exits the property the way he came, bangs the window shut and heads home.