where is the gunshot residue on sheilas nightie
ELEY subsonic rimfire ammunition used non conventional propellants rendering such tests meaningless, They would come back negative is any situation. Even if JB did commit the crime you would still expect GSR on the nighty because you have two shots fired in very close proximity right above the nightie then you have a gun that has fired 25 shots placed onto of her chest.
Here is part of page 208 of the book Forensic Science From the Crime Scene to the Crime Lab by RICHARD SAFERSTEIN, PH.D. Forensic Science Consultant, Mt. Laurel
However, hand swabbing or the application of an adhesive cannot be
used to detect firings of most .22-caliber rim-fire ammunition. Such ammunition’s
primer may contain only barium or neither barium nor antimonyHere is an extract of page 101 of Current methods in forensic gunshot residue analysis by
A. J. Schwoeble and David L. Exline forensic scientists at RJ Lee Group

The manufactures of Remington rimfire ammunition is ELEY LTD

Now I have obtained a copy of the 1983 patent for that type of ammunition listing the ingredients
however I still cannot be sure its the exact production of the ammo used at whf

where is the gun oil from handling bullets on sheilas hands
The ELEY ammunition uses beeswax as lubricant not traditional gun oil.
take a look at the photo lemonhead kindly gave to me and see the path the bullet took.
Lemonheads photo is not accurate at all.
also where is the blood on sc nighty or do you think firing 25 shots some at point blank range there would be no back splatter.
A .22 calibre weapon produces very little back spatter. See the images below

Here is an experiment carried out with a handgun using a 9mm. As you can see if this was rifle the length between the shooter and the victim will be too far to land

Also the nightie was never tested for micro splatter, had they not destroyed it modern tests could be done.
what about the life and death struggle in the kitchen
I am sceptical as to whether such a thing took place in the kitchen. There is no blunt force blood spatter around Nevilles body, the position of Neville's body is odd for a struggle also, some speculate he may have walked into the kitchen after being shot and injured then began to lose consciousness and collapsed into the position he was found in.
I would like to see NBs autopsy photos and X rays to make a more in depth assessment. before I come to any conclusions.