There is overwhelming evidence and agreement that the silencer was on the rifle during the massacre. The evidence shows the silencer had to be put onto the rifle by Sheila prior to the first shots being fired.
The big question here which if it cannot be answered will surely result in all supporters changing stance is - did Sheila have the opportunity to put the silencer on ?
Obstacles preventing Sheila putting the silencer on:
She was in a rage so would not be calm down long enough to do this.
She may not know how to put the silencer on.
She may not know which silencer fitted the rifle.
She may not realise the rifle can be used with a silencer.
She may not know there was an available silencer at WHF.
Neville was awake and would have prevented her from doing this.
If Neville was not awake, she did not need to put the silencer on as could just shoot everyone in bed while they slept.
If Neville was awake but Sheila still had the opportunity to put the silencer on, why bother ? Neville was awake.
Bamber is claiming Sheila took a spontaneous decision because he left a rifle in the middle of the kitchen. This contradicts Sheila then looking for and fiddling around with a silencer
If Neville was awake but Sheila still had the opportinity to put the silencer on, why not just shoot Neville instead ?
The silencer was small and in a cluttered gun cupboard. It may have been hard to find.
The silencer had no effect on the effectiveness of the bullets.
The rifle was already long, and so was the silencer. Sheila was planning to kill herself. Sub conciously she may consider this will be harder with a silencer attached.
The evidence shows the only opportunity Sheila had to put on the silencer was prior to the first upstairs shots. The kitchen fight was straight after these shots. Why put it on if Neville was asleep ? This also rules out Neville phoning Jeremy.
If everyone was aleep, getting and putting on the silencer may wake people.
If Sheila was in a rage and Neville awake, there would be a lot of noise inside WHF. So a bit late to put the silencer on to keep things quiet.
There was a loaded rifle in the kitchen. If Sheila was in such a rage to spontaneously start shooting people, she will do so. Rather than fiddle around with a silencer, which requires a calm head.