Next to the 470 you can see that the 360 No.2 is not a pip-squeak!
Here is a photo from my bench.
L to R
Bertram 360 No.2 “formed” case, same fire formed in my Greener, 450/400, and the same necked down but not yet fire formed.
As you can see, I had to be pretty generous with the annealing...