2) Hell no
3) And NEVER
trust this guy with your gun and body parts.
If he knows he has two double charged shells in the stack, what about the two shells that have no powder that he forgot about?
Fire a blooper, forget to clear the wad from the barrel followed by a regular shell = bad news...wrecked gun, probable body damage.
Fire a blooper, forget to clear the wad from the barrel followed by double charge = REALLY BAD NEWS.....wrecked gun and very likely severe body damage (as in missing parts).