The evidence is Bamber & Nevill struggled for the rifle. Scratched aga, smashed ceiling light, upturned furniture, sugar on the floor.
However it is correct Nevill was in defence mode after being shot 4 times upstairs. Together with being bare footed and in pyjamas.
This resulted in the damage to Nevill's eyes, nose, head, arms, torso and watch. Together with the rifle stock breaking.