Author Topic: The sound moderator  (Read 793 times)

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Offline Jan

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The sound moderator
« on: January 21, 2018, 04:10:PM »
A question

Why does the silencer come apart ?

Would someone clean a moderator on a gun regularly ?


And how might they do that .


Are human proteins only found in blood or can they be transferred from sweat or flakes of skin?


Offline ngb1066

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Re: The sound moderator
« Reply #1 on: January 21, 2018, 04:22:PM »
A question

Why does the silencer come apart ?

Would someone clean a moderator on a gun regularly ?


And how might they do that .


Are human proteins only found in blood or can they be transferred from sweat or flakes of skin?

The silencer/sound moderator can be dismantled by unscrewing the end cap.  The individual internal baffles will then fall out.  It is good practice to clean a sound moderator after a number of shots have been fired through it, although it is not necessary to clean it as often as the rifle.  The silencer is cleaned by dismantling it and then wiping each individual baffle. 


Offline Jan

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Re: The sound moderator
« Reply #2 on: January 21, 2018, 04:33:PM »
Something had stuck in my mind about one of the blood experts saying that the blood in the silencer could have a very remote possibility of being animal blood , but he was eleminating that because there was human protein in the blood .

I could not understand that because surely blood groups between animals and humans are different why was the protein the eliminator .

I also just read that some people use a toothbrush to clean a silencer .

So I suppose I was asking was there any chance there could have been human protein in the silencer before the blood was in there ?

Do we know how old the silencer was or was it the same one purchased with the gun ?


Offline David1819

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Re: The sound moderator
« Reply #3 on: January 21, 2018, 04:41:PM »
The silencer/sound moderator can be dismantled by unscrewing the end cap.  The individual internal baffles will then fall out.  It is good practice to clean a sound moderator after a number of shots have been fired through it, although it is not necessary to clean it as often as the rifle.  The silencer is cleaned by dismantling it and then wiping each individual baffle.

There is no particular order the baffles are to be inserted in either. How can we be sure Cook and Fletcher re-assembled it as it was first found?

It would be much simpler if it was this model involved instead.


Offline Jan

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Re: The sound moderator
« Reply #4 on: January 21, 2018, 04:46:PM »
Mike covered the subject very well in this thread

Case could turn on AK1 blood from rabbits.


But don’t think he covered where the human protein that swayed the blood experts view could have come from

But if the silencer was new then it probably would never have been cleaned ?

Offline Jan

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Re: The sound moderator
« Reply #5 on: January 21, 2018, 04:52:PM »
Mike covered the subject very well in this thread

Case could turn on AK1 blood from rabbits.


But don’t think he covered where the human protein that swayed the blood experts view could have come from

But if the silencer was new then it probably would never have been cleaned ?




AK 1 as the expert says is found in ALL humans - and another substance called AK1 is found in rabbits - although AK 1 and AK1 are actually different they share 95% similarities - he does state that in his opinion it is possible they may have been confused but unlikely ...

He also says "It should also be noted that the blood flake gave a positive result in a test for human proteins and other enzyme typing tests gave typically human results."

So he thinks it is very likely that some of the blood/dna found inside the silencer was human ...

BUT as posted above he believes it might well have come from lab contamination - not blood splatter ...

He also says that "Whether one focuses on the possible presence of June Bamber's DNA or the possible presence of Sheila Caffell's DNA, the DNA profiling results were not reliable evidence to point to the source or sources of the blood found in the sound moderator in 1986."

Another expert stated that she thought it slightly more likely that the blood/dna came from Sheila - but as the Appeal Court Judges said her reasoning and unsureness on this point meant that :

"Miss G's views and whilst recognising the possible validity of the point that she made, felt that it was unsafe to draw any such conclusion. Whilst we recognise that there may very well be merit in Miss G's evidence in this regard, we doubt very much whether a jury would have been prepared to place any significant reliance upon

Offline David1819

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Re: The sound moderator
« Reply #6 on: January 21, 2018, 07:23:PM »



AK 1 as the expert says is found in ALL humans - and another substance called AK1 is found in rabbits - although AK 1 and AK1 are actually different they share 95% similarities - he does state that in his opinion it is possible they may have been confused but unlikely ...

He also says "It should also be noted that the blood flake gave a positive result in a test for human proteins and other enzyme typing tests gave typically human results."

So he thinks it is very likely that some of the blood/dna found inside the silencer was human ...

BUT as posted above he believes it might well have come from lab contamination - not blood splatter ...

He also says that "Whether one focuses on the possible presence of June Bamber's DNA or the possible presence of Sheila Caffell's DNA, the DNA profiling results were not reliable evidence to point to the source or sources of the blood found in the sound moderator in 1986."

Another expert stated that she thought it slightly more likely that the blood/dna came from Sheila - but as the Appeal Court Judges said her reasoning and unsureness on this point meant that :

"Miss G's views and whilst recognising the possible validity of the point that she made, felt that it was unsafe to draw any such conclusion. Whilst we recognise that there may very well be merit in Miss G's evidence in this regard, we doubt very much whether a jury would have been prepared to place any significant reliance upon

The Key point is whether the SM was attached when Sheila was shot. The latest ballistic evidence shows it was not. And if that is correct you can safely deduce the blood has been planted maliciously.

Offline Jan

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Re: The sound moderator
« Reply #7 on: January 21, 2018, 07:47:PM »
The Key point is whether the SM was attached when Sheila was shot. The latest ballistic evidence shows it was not. And if that is correct you can safely deduce the blood has been planted maliciously.

Good to know 😄


Or there is the possibility that there was blood in there that has been misinterpreted . That is being generous .

Offline Steve_uk

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Re: The sound moderator
« Reply #8 on: January 21, 2018, 08:57:PM »
The Key point is whether the SM was attached when Sheila was shot. The latest ballistic evidence shows it was not. And if that is correct you can safely deduce the blood has been planted maliciously.
Which evidence is this Mister Holmes..

Offline David1819

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Re: The sound moderator
« Reply #9 on: January 22, 2018, 05:04:AM »
Which evidence is this Mister Holmes..

Officer Barbrady, I suggest you ask NGB. He knows all about it.
« Last Edit: January 22, 2018, 07:27:AM by David1819 »