I don't think you can really tell from the photos how much of her hand is in contact with the gun, but anyway, they did find low amounts. Much larger amounts would have been found if she had loaded and fired it.
I think when we discussed this before we established that lead deposits don't just 'fade' away. There is absolutely nothing to suggest they were rebagged, and as you know, the prosecution case (supported by evidence) is that they were resubmitted, not retaken.
Unfortunately, I think you overlook for the possibility that any bullets which Sheila did load up were handled by the brass case part of the round, and not by the lead bullet itself - in those circumstances there would be very little lead deposit found, or transferred onto her fingers, do you not agree?
You need to prove to everyone that when Sheila loaded up bullets into the guns magazine, she handled all the bullets by the bullet head, rather than by the brass cartridge cases - and your evidence to prove and establish this is? Similarly, you also need to prove that when the lab' assistants carried out tests to see how much lead deposit got onto the fingers of their hands after loading bullets into the magazine of the gun, that they handled those bullets in the exact same way that Sheila Caffell had done - and how do you think you would be able to prove that? Lastly, no tests were carried out by those volunteers to see how much if any lead deposit would be transferred by handling the rounds by touching only the brass cases of the bullet, and the results obtained by these means compared against the results obtained from the testing of the dodgy hand swabs (Be they lab' item No. 17, DRH/33, or Lab' item number 75, DRH/44), and the evidence to prove this to be, or was the case is?