As to the OP yes I do it all the time.
I was going to post a thread similar to this.
With the new 310.15 -b (6) rule.
I have to replace a 150 amp meter base combo feed through panel.
As you may know they are rare in my area. So I would like to install a 200 amp feed through panel.
I will use 2/0 cu. from the meter to the 200 amp feed through panel.
There is a breaker for an ac/heat pump on the outside panel.
Then the existing inside panel has a 150 amp main breaker.
So my question is, would I still be able to use the 2/0 copper to the 150 amp main?
The panel would be protected from overload by the 150.
The 2/0 it seems also would be protected from overload by the 150.