I just found that the ability score increases at level up don't say you can raise an 18 to 19 or a 22 to 23 (scores without magic items increasing them). The faq entry also only has examples of going from 13 to 14 or 15 to 16.
Now, when I take a look at the rules for ability scores, it says:
Each ability score generally ranges from 3 to 18, although racial bonuses and penalties can alter this; an average ability score is 10.
From countless builds by other players I can see that RAI there is no limit. But RAW say "generally" and lists exceptions, without mentioning leveling up.
Is there something official about raising your main stat to 25 without magic items, just through leveling?
