No one can prove Oswald owned the Carcano unless one can produce a Bill of Sale from Alec Hidell* (rhymes with 'Fidel')
Only in your world of circular arguments.
Never heard of him. Or of any "bill of sale" in that name.
Not that you're anal about Alec/Alex/Alek minutia.
Or editing posts so as to hide the fact that someone would dare mock you.