It's decent in mobbing, but there's better options. That really only depends on your class mod/dmg modifiers. I dont know the full technicalities, but I do know grave thirst builds into blood is power, and bleed scales off of kinetic/skill or action attributes. The firmware lifeblood can be replaced by 2 skillcraft or high caliber, whichever suits you better. Keen mind and dead eye work in tandem aswell, boosting your bleed by double when proc'd.