Hey, I am playing a cryo 3 psycho 1 necro 2 wizard with balanced int and con stats (around 210 each at level 238) and a block rating around 340.
I am currently wearing a Ledas Shield and very happy with it
The last 20 level or something I finally found myself blocking sometimes. Would it be worthwhile to invest more heavily in con (or drop int intirely)? I really like tanky classes and I feel lesser int would not impact my dps that much…
Luckily I got my hands on an Animus, so con would at least give me some damage in return 
So my main question is:
How much block rating do I need to autoblock decently at level 280?
Lets say I would like to block around 50% of all physical attacks at level 280, from most monsters level 280. How much block rating would I need?
I did not find out how much block penetration the monsters have but their spr amount is mostly pretty low.
Has someone a formula for it? I searched and found no helpful answers.