max bs damage with ragebringer should be 553, so far i have only hit 506 as a max and in the 500s a handfull of times.
Here is every backstab i have done since i got my RB, (check out my first kill target)
http://pastebin.com/KYNT8Ybs
901 backstabs, 7 are over 500, max is 506
120 is min backstab, i had 444 min backstab out of 901 - 49% min backstab damage, WAY TO HIGH. i am too lazy to pull out my assassinations from this log (58)
I am a buff whore, this log is max str. This log will have a few fights with my disc which will sway the log away from my argument.