On BW the Bolt Staff really shines because of her passives and talents, so if you mainly like the weapon it might be worth switching to that career. I love this weapon on this career.
Even on Cata it’s great! Volcanic Force + Enhanced Power + 20% Chaos + 20% Armored: One shot bodyshot everything other than Chaos Warriors and Monsters / Bosses with the full charge. (And beastmen Standard Bearers, I think?) CWs still die rather quickly regardless. (Two bodyshots, I think?) It’s glorious. On Legend Volcanic Force & Enhanced Power alone might even be enough to do the same thing.
There are even ways to effectively combine it with Famished Flames, despite the damage penalty. (Famished Flames + Firesword is borderline overpowered, and is a combo that doesn’t even need a staff to support it.) Even on Cata you can hit breakpoints to bodyshot any special outside of Blightstormer, Leech, and Gasrat, and headshots still take care of those and even Stormvermin. On Legend you can probably hit Stormvermin bodyshots and breakpoints for those specials as well (not sure).
And even if you want to meme around with Lingering Flames the Bolt Staff can hit Cata breakpoints for Stormvermin bodyshots, and headshots for almost everything else. The same breakpoints should be attainable for Pyromancer as well, by the way. Best way to decide how to build is to mess around with the breakpoint calculator.