He said he was trying to take it from the kid, so they will both have powder residue. Unless he is lying about the 'trying to take if from the kid'.
'Why did I put myself in this spot?'
At least he has his priorities straight...
There was a book or movie about how a man would play a game with his young child to pull the trigger in an unloaded gun on his mother when she was sleeping. Eventually he loaded the gun, and blamed the kid.