You roll a number of dice corresponding with the armor rating (armor + helmet). Every success removes one from the damage total. If the wearer receives any damage, then, and only then every rolled 1 in the armor roll will reduce the armor rating by 1 point.
You roll a number of dice corresponding with the armor rating (armor + helmet). Every success removes one from the damage total. If the wearer receives any damage, then, and only then every rolled 1 in the armor roll will reduce the armor rating by 1 point.