It seems to me, that there are strong grounds for believing that there were 'two shooters' involved in these killings...
Lets look at the 'emerging pattern' involving 'white residue' contaminated cartridges in locations inside the farmhouse, as opposed to the other lot of cartridges, minus, 'white residue'?
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White residue cartridges in
'main bedroom', DRH/3, 4, 6, 7 and 12 (fired from gun 1)
None white residue cartridges in same room, DRH/1, 2, 8, 10, 11, and 43 (fired from gun 2)
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White residue cartridges in
'children's bedroom', DRH/16, 17, 18, 37, 38, 39 (1), and 46 (gun 1)
None white residue cartridges in same room, DRH/39 (2), (gun 2)
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White residue cartridges in the
'kitchen', DRH/19, and 20 (gun 1)
None white residue cartridges in same room, DRH/41 (gun 2)
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The three 'uncategorised' cartridges were found,
'main bedroom', DRH/13,
'upstairs landing', DRH/14, and
'Children's bedroom', DRH/40...
This brings me back to the point I have previously expounded on the forum - Did Sheila Caffell, have 'an accomplice' in the murders of the other four victims? I strongly believe 'that such an accomplice did exist. Cops knew this to be true, but they couldn't pin that role on the person they had set their hearts on charging (Matthew McDonald). In any event, it was the right decision not to pursue him for involvement in the murders, so they turned on Jeremy, in the full knowledge that 'he' had 'not' had anything whatsoever to do with the death of his sister. In order to achieve prosecuting Jeremy cops had to turn the investigation into a one gun crime, which involved swapping spent cartridge cases, for obvious reasons. Identifying the second weapon used seems so obvious, it beggars belief that for 30 years everyone has been thinking there had only been one gun used in the shootings. The only other gun that could have been used in these shootings is the Anthony Pargeter .22 Bruno rifle. His conflicting accounts that he has given to cops, at one stage or another, as to the whereabouts of his gun at the time of the shootings, how he had always kept his rifle at the farmhouse since he purchased it in 1980, but that he made it his habit to 'always' remove the bolt from it and to take that home with him to his home in Buckinghamshire, so that 'no-one' could fire his rifle in his absence (Essex police statement) as opposed to the suggestion that he had taken it home with him on the penultimate week-end prior to the shootings (COLP statement). My own personal belief, is that the Pargeter gun was present at the farmhouse at the time of the shootings. Although I now do not believe he had personal involvement in the killing of the other four victims, other than he has lied deliberately as to the whereabouts of his gun at the time of the shootings...