A Stormboy Jump Pack counts as a Jump Pack in every respect but one, the distance a Stormboy strays on landing. Where a Jump Pack scatters D3", a Stormboy scatters half the score of the Artillery Dice, from 1" to 5".
A Misfire means the pack has failed: roll a D6 on the chart below.
Stormboy Jump Pack Misfire Chart (D6)
1
The Stormboy is killed in the air and counts as a casualty.
2
The Stormboy dies on touching down, and every model within D3" of the landing point takes an S4 hit at -1 Save Modifier.
3-5
The Stormboy comes down 3D6" away; a Scatter Dice gives the direction.
6
The Stormboy leaves the table, and is not a casualty when
Victory Points are scored.