Different batches of .22 ammunition are not coated in the exact same levels of grease as every other piece of .22 ammunition. Some, for example may appear dry whilst other rounds in a separate box can be densely coated in the same. Another important feature 'ignored', was the lead deposit levels found by a volunteer 'handling' the rounds from the same batch (box) as those rounds used in the shootings, for example, the remaining 29 rounds, used at one time or another, in 'unofficial', and 'official' test firing of the aforementioned 29 rounds...