TY for report! For arcane blast before rune may be he start cast arcane blast just when rune ends: i will refresh rune sooner. and will cast barrage moving if colldown <= 2-3 sec. Your dps seems good!
@wanted31 i will give more priority to frost bomb if talented.
Can Arcane work with other Talents other than Rune Spec? I have Mana issues while using Arcane with KingWow, DPS reachs almost 300k but cannot stay there due to mana problems, I don't know why it is I have Ilvl 527, all my tier set as well;(