There's a new shot rotation macro that be pushed.

#showtooltip Steady Shot
/cast !Auto Shot
/cast [target=pettarget, exists] Kill Command
/cast Steady Shot
/script UIErrorsFrame:Clear()

You can see all the data here:
http://elitistjerks.com/f31/t13107-hunter_shot_rotation_illustrated/p14/

Someone tested it with a Wolfslayer and a Phoenix bow.

Very surprisingly the Wolfsayer is equal or a bit better than the Phoenix bow.

I'll try this macro out in kara tonight.

|Madox