Talk:Type 91 Armor Piercing Shell/@comment-121.121.60.51-20150622165640

According to the japanese wikiwiki, the bonus damage is x1.08 with the common Main gun, Main gun, AP shell, seaplane setup against armored enemies. This includes things like BBs, CVs, CAs, Onis, Himes and installation type enemies. This bonus is applied after the firepower cap.