Was already asked here: Bastion module and heavy missile launchers - Issues, Workarounds & Localization / General Issues - EVE Online Forums
TLDR: Bonus only applies to Battleship sized weapons. So RoF Bonus for Rapid Heavy Launchers should work
Was already asked here: Bastion module and heavy missile launchers - Issues, Workarounds & Localization / General Issues - EVE Online Forums
TLDR: Bonus only applies to Battleship sized weapons. So RoF Bonus for Rapid Heavy Launchers should work