Posting this for a friend who owns one...
He buys the 300 grain bullets and they load perfectly.
He reloads some of the 330 grains, and they are too long to close the cylinder when sized to the specified length in his reload manual.
My solution: Push the bullet more till it matches up with COL of the factory loads.
His fear (and why I am posting this) is that seating the bullet deeper in the brass will create an overpressure and blow his gun up. We have argued (in a friendly way) about this issue.
So let's see what the experts say!
PS. Murphy...check your PM's!