I can't look at your armory at work but your rotation, if it's single target should be changed. BS>Recklessness>DS>Heroic Throw>Charge>Shield Slam>Dev>Dev. Rend and TC and Shockwave aren't as strong on threat at the start of the fight. Recklessness isn't required and for some fights it maybe even a bad idea. Once you have some vengence stacks using shockwave and CB are good ideas. There are several threads on a 4 gcd cycle around here as well. Do not gem/enchant/gear for hit/expertise period.