Accuracy with Storm Bolter vs. Eldar Skimmer

I clutched at the pintlemounted storm bolter for support, swinging it round as I regained my balance, and found one of the eldar raiders drifting across the sights. Even before my conscious mind had registered what I was seeing, I pulled the trigger, sending a hail of explosive-tipped projectiles in its general direction.

Luck or the Emperor was certainly with me that day, as the volley ripped along its starboard side, either detonating within the engine, or cooking off its powercells. (18) A miniature thunderclap echoed across the landing field, audible even over the racket of all that firing, and everyone in the vicinity ducked to protect their heads from the rain of debris and dismembered pointy-ear which descended abruptly from the middle of a short-lived fireball.

Ciaphas Cain: Choose Your Enemies