%boss dmg not working?

Okay well,
1) Your buffed range - 68055~80065
2) Your total boss damage on weapons 50%
3) Your Ignore PDR on weapons Marksmanship 25%
4) What monster are you attacking Bodyguard A (believe it's a default 10% PDR)
5) Your level of Dark Bind N/A
6) Your level of Demon Impact N/A
7) Your level of Devil Cry N/A

I see up to 380k Shouldn't it be something more like.. you know.. 400k or closer to 500k?

Hurricane, 220%