I'm looking for a good 2v2 Beast Mastery spec. My partner will be a ret pally and he told me to respec to Beast Mastery for burst damage on healers. I've been searching for good BM builds, but I'm getting conflicting results. I've narrowed it down to This

I've never played BM in PvP so if any of you have a few pointers I would be delighted

Also, what kind of pet should I use?