By request, gunning the HR6 Black Grav with gear obtainable at this level. Completed in 5:46.
I'm using Kirin S with the Barrage Piercing, and the King Lobster gun (the Plesioth LBG).
If you'd like to know more about gunning, I have the Bowgun Compendium, at: www.gamefaqs.com/portable/psp/file/943356/56818
The music is Metallica's Damage, Inc.
Enjoy!
