Not IMO.
Because experts know about wax on bullets etc...so I doubt they would have run tests if they were going to be that severely flawed.
Experts?
Experts who had previously rejected the very same hand swabs (under a lab' item reference number of 17) which had been submitted on 9th August 1985 because it was feared or believed that they might have been contaminated through contact with firearms that they arrived at the lab with, which were resubmitted under a differtent lab' item reference number of 75, and these very same experts would have done all the necessary work and checks to make sure that the hand swabs in question were uncontaminated and wax free? Give me a break, stop trying to portray these prosecution experts as godly, and all knowing - basically they were incompetent (to say the least), oh, and when you say that they would have known about these things, what exhibit reference would they have carried out these tests and checks? DRH/33 and or DRH/44?
These experts were a joke in my opinion, and extremely bias in favour of the prosecutions case...
They allowed these exhibits to have their identities changed and altered even without their knowledge, and a man has been convicted and sentenced to a life term of imprisonment based upon the quality of this evidence - which is an absolute disgrace...
The levels of wax on batches of ammunition may vary from batch to batch and there is no way that any expert can guess this. Test would have to be carried out and the results from these test published before you can start throwing around imaginary standards...