Was it a scuffle or fight at the kitchen sink? Something happened there Adam didn't it. This is the place where NB lost his watch and the light shade above the kitchen sink was smashed. There is also multiple drops of blood on the floor. I say drops because this suggest that the bleeder was stood.
I doubt a big fight occurred there a scuffle maybe. The lack of blood in the kitchen/floor has always bothered me. 
There was not much blood leading to the kitchen. He still got there wounded. The notion he was bleeding like a siv and leaving large amounts of blood around is simply not true and based largely on fake things people see on TV. People have unrealistic expectations about wounds.
The evidence established they struggled over the wepaon, the killer got control of the weapon, bludgeoned Nevill's right side with it, he blocked with his right arm hence defensive wounds and the watch being torn off and eventually he was hit in his head repeatedly so hard that the stock broke and he passed out. The killer then had time to load the gun shoot him in the head while he was slumped over and thus his head was easy to target and he was killed.
Beating his head to the point you break the rifle stock is not something minor. He also had black eyes and a broken nose so had been struck in the face at some point either by fists or the rifle. Wielding rifle like that will break nails is someone hads long nails, will cut a hand or leave blisters (especially when the stock broke) and will surely result in back spatter.
This is a tremendous problem for those insisting Sheila did it which is why it is denied. This is one of the reasons that Jeremy apologists have a bad reputation with the public at large. When the obvious is denies it result in not beling trusted period and a lack of credibility.
The claim police caused all the damage is not only not credible but was rejected after a thorough investigation which looked at how police admitted to the things that they did as far as damaging various doors and opening windows and that sort of thing.
The notion Nevill simply walked in the kitchen, slumped over the chair and was shot then subsequently was bashed after he was dead is not credible to try to explain away why there would have been no back spatter is not credible. He was killed in the very position he was found. He could not have been bashed in that position. Who would bash a dead man at all but bother to bash his arms even? He tried to protect himself that is how his arm was so damaged they were defensive wounds.
Passed out or not bashing his head would result in nails breaking and damage while wielding the rifle if one has long nails and is not using gloves. The intensity was sufficient to break the rifle and result in enough damage to his head to knock him out. That is all that is needed to know as far as intensity of this struggle.
The things that supposedly bother you are curious. You expect there to be blood all over the room even though he didn't leave a large trail of blood to the kitchen from the bedroom just a little where he crashed into things like a wall and yet have no wonders about how Sheila could avoid breaking some nails and having back spatter from bludgeoning him with the rifle.
Trying to downplay the intensity doesn't reduce the fact that these things would occur from him being bashed by the rifle to the point the watch was broken off, the stock broke and his head bashed in.
