The metagame is not established enough for there to be a generally accepted CM Fini spread. In my opinion, the spread you want should be based on what you want to KO at +1, and what kind of attacks you want to survive 2 hits of to activate your 50% berry. For example, 0 HP / 4 SDef Landorus is KOed with a Bold 44 SAtk Scald at +1, where Muddy Water requires Modest and 132 EVs to always KO at +1 when it hits. A defensive example would be Mega Kangaskhan's Jolly Double-Edge; With no Intimidate, you need a spread of 252 HP / 132 Def with a Bold nature to always survive 2 Double-Edges and get your 50% berry healing. If you have solid Intimidate support, you can afford a much more offensive spread. 252 HP / 68 Def with Modest is enough to always survive two -1 Mega Salamence Double-Edges (and Kangaskhan's by extension since a Mence Double-Edge is always more powerful with the same EVs and nature) and get your 50% berry healing.
Basically, if you have no Intimidate users or only something like Mega Salamence which loses Intimidate, try a bulkier spread. If you have Landorus or multiple Intimidaters, try a more offensive spread out.