Talk:Harbour Water Demon/@comment-26352329-20150504142330/@comment-25784159-20150506060422

AP increase crit chance is a rumor, not confirmed.

AP shell + at least 1 large caliber increase firepower by about 10-15 when attack a high armor enemy

AP shell cut-in dmg has 150% modifier, then calculated to damage as normal

AP shell bonus applied during daytime only

that's pretty much everything you need to know about AP shell