Individual control bullets were not given identification marks, so that they could be tracked, and any comparison tests performed by use of them, could be verified by other experts who followed in the footsteps of Fletcher:-
Two of the 29 control bullets which formed part of exhibit DRH/22, were unaccounted for as part of the official test firings, of the Bamber gun and silencer, which took place between 20th September 1985 and 2nd October 1985' opening it up for the possibility that these two missing control bullets were used in some sort of substitution process arising out of the unofficial test firings that took place on or before 12th September 1985., where one of the missing control bullets was fired through the Bamber rifle minus the silencer, whilst the other was fired through the silencer attached to the Bamber rifle...