Gunner Stuff

Not the Imp dude? For Fighter it sells Bracer Knuckles, for Bard it sells Lyres, for Puppeteer it sells Jeweled Control Bars, and for Shapeshifting he has Moonlight Dream Catcher, but the Imp has nothing for Gunner?

Also is it worth using stronger bullets?

Is it worth going to such great lengths to hunt for ingredients for the bullets? In terms of damage, no. BUT people will be hunting hundreds of them anyways just to make them for magic craft so you might as well use them. And nope, no commerce one.