The sheer damage of the Galle is reliable for a nuke launcher. But during situations where boss damage isn't necessary if go with my deviant gravity for quick add and guardian kills.for specials I use felwinter'a lie. My Poe play style is to stay back but when a higher tiered enemy is I I can 2 shot him with it. For anything it's pradeth's revenge for a balance of elemental damage and rate of fire it is very effective. Primaries would be fatebringer, jewel of Osiris, or word of Croat based of element properties. These are my ideal load outs.