Current Shield Slam Records

[Akilleuz]

I have been wondering a bit. hehe

As the abillity say, Shield slam does 420-440 dmg. Then it is modified by your block value. As it says. Then you take 3/3 Shield Mastery. Which improves your block value with 30%. Now this should look like this, according to my understanding; ~430+(BV*1,3) or the other way, which I don't fully trust; (~430+BV)*1,3. Which way is the correct? The difference is too small, for me to have noticed in game. Well atleast way too many things mitigate it. Like locks with their DMG reduce, warrior in zerger stance, Shadowpriest with their dmg reduce etc. etc. etc.

What is correct?