What these guys said. If the DPS don't pop all their cooldowns in the beginning or healers don't Medica spam I usually
Butcher's combo->Storm's Eye->Butcher's.
If someone's riding on your ass in aggro after the first butcher's you need to do another one. Pop your cooldowns after the first Storm's Eye for the maximum DPS increase (between the Heavy Swing and Skull Sunder). Make sure to maintain Fracture too