I've checked ratemyserver.net and it says that at level 10, it does 500% damage but on some official servers it's been upgraded to 600%. So which is it in this server?
After reading roempire's forums regarding this now i understand correctly. Previously BB was 600% damage and hits once but now its 500% damage and hits twice!
Thanks everyone who tried to answer my question.
For those who want more information go to this link