If a weapon that has instant death/force rule shoots at target that it can't normally hurt even on a six to wound, would it do damage on a six? This came up in a game when a Gatling psilencer was shooting at a wraith knight (str 4 vs. T8) and was not sure if the instant death would help in that situation, failed the psychic test to make the weapon force so didn't bother looking in to it further.