Talk:Combat/@comment-75.182.38.80-20150212140446/@comment-25779449-20150212214149

Here you go

http://kancolle.wikia.com/wiki/User_blog:Homuhomu123/Shelling_Accuracy_Test_Results_(Source_to_be_cited)#IV_-_Overweight_.2F_.22Fit_Gun.22_Mechanics_on_BB_.28Red_Morale_Test.29

Yes, "fit gun" on BBs does give marginal accuracy bonus, while overloading guns too heavy for the ship induces significant penalty on accuracy