User blog comment:KptRudobrody/Akashi guide for everyone/@comment-189.54.229.116-20150923163743/@comment-26459119-20150923171919

Using 15.2 will provide nice accuracy boost for CLs and this is the only reason why you should use them. I want to run some tests about ACC difference between 15.5 and 20.3(2) - i don't know if there is any.

If you want more ACC (useful in combined fleet) go with 15.2cm Twin Gun Kai or .15.2cm Twin Gun.

If you want more FP go with 20.3cm(no.2) Twin Gun or 15.5cm Triple Gun (Main) - 20.3(2) have 2 FP more than 15.5.