Oath of Knowledge: +10 BS
Full auto: +20 BS
Hellfire rounds: Effects: The weapon ignores Natural Armour and may inflict Righteous Fury on any damage die results of a 9 or 10. In addition, the weapon gains the Tearing Quality (if it did not already possess it).
Edit: 11 hits (max of 4 though for a Bolter)
Right Arm, Arm, Body, Head, Body, Armx6
Rolls
Bolter BS 42+60 - (1d100, 2d10+5)
1d100 : (2) = 2
2d10+5 : (33) + 5 = 11
Damage: Arm, Body, Head, Body, Armx6 - (2d10+5, 2d10+5, 2d10+5, 2d10+5, 2d10+5, 2d10+5, 2d10+5)
2d10+5 : (48) + 5 = 17
2d10+5 : (78) + 5 = 20
2d10+5 : (75) + 5 = 17
2d10+5 : (109) + 5 = 24
2d10+5 : (66) + 5 = 17
2d10+5 : (29) + 5 = 16
2d10+5 : (21) + 5 = 8
More damage - (2d10+5, 2d10+5, 2d10+5)
2d10+5 : (109) + 5 = 24
2d10+5 : (64) + 5 = 15
2d10+5 : (610) + 5 = 21