I don't know if it is true in earlier version, in current version there is no meaningful experience cap, only a level cap of 30. You can dual at 29 and reach 30 in the second class. (View Post)

Correction: DUHM is capped at +6 for BG2, because caster level is capped at 20. There is no such cap in IWD. You can get +7 at level 21. ( I never have a chance to test if I can get better, because +… (View Post)