>if you shoot someone/something from close enough you can often get residue back scattering.
I can vouch for that. Shooting two .44 rounds through a tempered glass storm door from a few inches away left me with
the taste of H110 in my mouth for the whole week I was in jail.
OK, you know darn well you can’t leave us hanging with a tidbit of a story like that. You have to give us at least a basic summary of the whole thing.