Talk:Type 91 Armor Piercing Shell/@comment-25435890-20141104082550/@comment-25196231-20141104115124

@Anon

read the jp twitter posts please. It says 05▼味方艦娘【徹甲弾】装備補正の拡充「九一式徹甲弾」及び本日実装する新徹甲弾と大口径主砲を装備した際の「装甲の厚い敵大型艦艇」及び「地上施設」への火力＆命中補正が強化拡充されます.

which means when AP shells and Main guns are equipped, damage and accuraccy towards heavy armor ships and land installations are buffed.