Okay, the 25 bullets fired seems to make sense then.
The four shots to Nevill were after he was already dead or at least immobilised.
10 shots were fired.
The rifle was reloaded and four shots fired.
The rifle was reloaded with a bullet already in the breach.
That makes 25, the maths work at least.
It is now beyond doubt that the order of shots is as follows:
The first 10 shots were in the master bedroom, 4 shots to Nevill and 6 shots to June.
The rifle was reloaded in the kitchen and four shots were to Nevills head in the kitchen.
The partially full magazine was reloaded, with a bullet already in the breach, the rifle now contained 11 bullets.
These 11 bullets were distributed as follows: 8 to the twins, 1 more to June and 2 to Sheila.
______________________________
Given the above, what impact does that have on who may be responsible?
(Just humour me if you disagree with the order :D ).