Haywire Bolts

When shooting you can choose to fire a
haywire bolt. If so, you make one attack.
When resolving that attack, if it is made
against a VEHICLE, an unmodified
wound roll of 4-5 inflicts D3 mortal
wounds on the target in addition to any
other damage, and an unmodified wound
roll of 6 inflicts 3 mortal wound to the target
in addition to any other damage.