The submitted to court and current silencer evidence:
This shows 100% the silencer was on the rifle throughout the massacre.
The possibility of the silencer evidence being incorrect:
There was no possibility of all the evidence on the silencer being wrong due to human error or testing methods.
There was no possibility of the police or relatives successfully contaminating the silencer.
The evidence was accepted at court. Further tests have just reaffirmed the evidence. With Sheila matching 13 out of 17 markers.
Implications of the undisputed silencer evidence:
The silencer evidence alone shows Bamber is 100% guilty.
It was impossible for Sheila to commit the massacre and leave this evidence on the silencer.
There are multiple obstacles and no reason why Sheila would put the silencer on pre massacre.
It is not confirmed that Sheila knew how to insert the silencer, knew where it was or considered it advantageous to use.
Bamber testified he was proficient with the murder weapon.
There are multiple reasons why Bamber would use a silencer.
There are multiple reasons why Bamber would put the silencer away.
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All of the above points are the result of recent investigations resulting in undisputed threads.
On this one piece of evidence alone, Bamber is guilty, beyond reasonable doubt. Although there are over a hundred supporting pieces of incriminating forensic and circumstantial evidence. Some of which is in the library.