User blog comment:BurningHype/Original Character's Weapon Guide (Revamp)/@comment-28254759-20160421095633/@comment-25582638-20160421101327

Dusts are for additional damage and fuel as far as I know. Fusing the elements are okay but altering them can be possibly considered OP. Rather than going for them, I think it'll be more practical to modify bullets themselves. As for the kinetic and stuff, it's beyond my knowledge and capabilities.

It'll be ideal to go to fanon's chat for more reliable and quick answers.