It couldn't be hard for Bamber to find out about human back splatter. Or that the rifle he intended to leave on Sheila, would be too long for her to reach the trigger with the silencer on. He already knew about guns and it would just take a bit of reading.
He put the silencer away so certainly knew the rifle was too long for Sheila with the silencer on. Either beforehand or realising at the time. But did he know about back splatter beforehand ?
He had to use the silencer. As my video showed, it greatly increased his chance to commit a silent, clinical and quick execution.
People say Bamber could have just left the silencer next to Sheila. But then that's leaving an open goal for the police. They would still get suspicious and would routinely check the silencer. Finding Sheila's blood on it, would mean Bamber would have no where to go.
He could have thrown away the silencer away from WHF. But to him, putting it in a box, underneath other boxes, dartboards and other guns, at the back of the gun cupboard was virtually throwing it away. He didn't believe the police would check inside every box inside WHF. And they didn't.
The thing he didn't legislate for, was the relatives being very suspicious, getting access to WHF and carrying out a big search. This happened, and the silencer was tested. As other forensic and circumstantial evidence emerged and Julie came forward, Bamber's 'watertight' plan started to leak.
Do other people believe Bamber knew about back splatter and the rifle being too long beforehand ?