Some people accept it Alias. Had Jeremy committed the murders, I agree that once the need for a second shot arose, then he would surely have felt that it would not be possible to pass off Sheila's murder as suicide. It is argued that because two shot suicides are viable and do indeed happen then Jeremy would have felt no need to change the plan. Even if Jeremy had been aware of this, which I think unlikely, he could not be confident that Sheila's death would easily be accepted as such.
Your claims are totally illogical. You and Alias are presenting the contradictory claim that 2 shots being fired proves it wasn't suicide and yet claim she did fire 2 shots to commit suicide. you can't have it both ways.
IF the first shot killed her and then the second shot was fired someone MIGHT be scared at that point because if police can prove the second shot was fired after she was already dead then the jig is up. But it is not always possible to prove.
You and Alias keep ignoring that the alternative of not framing Sheila was worse in his eyes. If staging a burglary would have been a good idea he would have used that instead of planning to frame Sheila. It would have been obvious it was an execution staged as a burglary. The only person with motive to do that would be Jeremy so it would send police to his doorstep.
He decided to stage it as Sheila murdering them and committing suicide to preempt police fro rushing to his door. No matter what following through with his plan was superior to just walking away and praying they would believe some third party decided to kill them all with a weapon found at WHF repeatedly reloading it to kill everyone including the kids as they slept so could not identify the killer and thus there was no need to kill them.
Once he killed them he had no choice but to carry through his plan to frame her and he felt it was such a great plan that it would not matter that he had to shoot her twice.
This alongside the fact that he also messed up by using the silencer, which he discovered was too long for Sheila to have committed suicide, so he had to replace it in the gun cupboard after murdering Sheila. Oddly he didn't discover the fact that the silencer was too long until after the second fatal shot. There are two, rather than one, massive blunders in the staged suicide scenario and yet supposedly neither of these blunders made Jeremy change course.
Anyway after putting the silencer back, which was too long, he coolly invents a phone call and convinces Essex Police and armed units to remain outside for hours with his cunning, or so we are led to believe.
You are right Alias, this part of the prosecution case sounds so unlikely that it merits scrutiny.
He figured his story about the gun being left out without the moderator attached would be sufficient for police not to ever realize it had been used. He found out it was too long after he moved her body flat and stuck the gun on her body, that is when he realized it was too long for her to pull the trigger. Staging it a burglary would not work it was clearly an execution so in his mind he had no choice but to
continue in his efforts to frame Sheila.