Rune of Penetrating (x2)

A war machine engraved with two Runes of Penetration increases the S of its shots by 1, to a maximum of 10, and allows the user to re-roll a single failed To Wound roll during the course of the battle. A third Rune of Penetration has no further effect. Note that in the case of a Grudge Thrower, this bonus increases the S of both S values in its profile.