Can't spend any time digging into that right now but speaking of smoke and mirrors within a few seconds came with sites with lists of crimes being committed in the US with 50 cals. A quick scan showed most if not all were incidences were where someone committing a crime also happened to own/process a 50 cal. So yeah, they counting those incidences as a crime committed with a 50cal. There weren't many such incidences but smoke and mirrors indeed.