I bet Susie Wolff could give you the ride of your life!
https://www.youtube.com/watch?v=yErvwBZrPx0
Hows about then the kinetic energy of the Eley subsonic hollow point bullets when expelled from the muzzle of the Anshutz .22 rifle/Parker Hale silencer instead of the reduction of pound force per square inch by using the silencer? Its not looking good for draw-back
Certainly not as far back as the 8th baffle or even the 5th baffle.
JB has spent enough time in the North at Full Sutton, York, plus Mike's influence, to become a Northern Numpty. Hope Andrea doesn't read this 
All you keep doing is saying that you choose to believe that drawback can't get inside a moderator or can't get a few inches inside. You can't find any experts that assert this though you just made it up yourself. Though all sources say one has to take a look at the area where the wound occurred and the conditions of the skin and availability of blood in that area you refuse to do so. You refuse to do so because such a look reveals her neck was full of blood and the conditions ideal for back spatter.
Courts and rational objective people don't care about your biased opinion. Courts and rational objective people care about evidence.
The irrefutable evidence is that drawback has been found in moderators and your claims to the contrary are false. Thus neither at trial nor on appeal has the defense attempted to argue to the courts that drawback can't occur with moderators attached to a weapon.
The irrefutable evidence is that 3 different things combine to cause drawback getting into a weapon during a contact wound- temporary cavity, the effect of the gases and tailsplash.
The irrefutable evidence is that the volume of blood available for drawback/backspatter is significantly more when there is a previous nearby wound that caused bleeding.
The irrefutable evidence is that the first wound filled her neck with blood.
The testimony at trial that drawback would be virtually certain to occur form a shot to the area of the fatal shot under all the conditions described was neither challenged at trial nor on appeal by any experts.
Your claims are just unsupported claims you mad eup nothing more and your mad eup claims don't deal with either leg of the prosecution's argument.
The prosecution's argument was two-fold:
1) Had the moderator not been attached blood would have gotten inside the muzzle of the rifle. You have not dealt with this at all. Your arguments about reduced gas pressure do not apply with the moderator unattached. You have no way at all to refute the argument that the rifle san's moderator would have resulted in drawback getting inside the rifle.
2) The fact blood got inside the moderator proves it was used in the murders- the distribution of the blood was consistent with drawback- atomized particles projected inside at all different angles thus manageng to strike 8 baffles. Blood can only get more than 5mm inside when a wound is a contact wound. Sheila's fatal wound was a contact wound while her non-fatal wound wasn't so that proves the drawback was from the fatal wound. So her fatal wound was fired with the moderator attached.
Either of the above is sufficient to establish the the moderator was used but combined it is even more powerful.
Evidence that drawback happens less frequently with moderators would not help dent either of the above points in fact it makes the first point even stronger. In this case blood did get in the moderator despite the gas pressure reduction so without the moderator even more blood would have gotten inside and it definitely would have gotten inside. That is the import of the things you keep claiming.
So congrats you helped the prosecution's case instead of hurting it.
The distance the blood was found inside was not too far for backspatter to travel. The volume of blood was small but significant. Had the blood been planted then blood would have been inside the rifle muzzle.
The only way to prove the blood was planted it through evidence establishing who planted what blood when and who concealed the finding of blood in the moderator. Saying you choose to believe it was planted doesn't prove squat, it is not evidence.
No one who asserts the moderator evidence was faked has any such evidence. They simply decide they want to believe it was planted and that is the end of it. In the real world that amounts to nothing and fails to refute it. You have bare suspicion it was planted and nothing more. Suspicion doesn't mean anything to to rational objective people decided what to accept as fact and thus means nothing at all to the courts.