Are Gunners bossing classes?

I'm sorry that is my mistake but just as other people have said, "Shadow Stars" uses 200 stars for an infinite amount of stars for a short period of time. With that down side it seems you would run out of stars before a gunslinger would run out of bullets, just as Baklava said the max a sin can carry is 1200 where as max for a gunslinger can be up to 4000 plus with the help of "Rapid Fire" would allow more damage to be dealt out faster using less bullets.
Also considering that we are talking about Gunslingers being a Great Bossing class. You also have to look at the Awesome help of "Advanced Homing" which will allow you to not only make all bullets hit the boss monster but also you deal extra damage to the target.

For the gunslinger, not the party. Advanced Homing int a party skill anymore (unfortunately) So yea, they are good at bossing, but will they be invited to bossing parties? Over a BM/MM or NL? I doubt it

Also, bullets are much MUCH more common than Stars