Just as a side note, years ago I owned a Mannlicher Schoenauer 1905 in 9X56 and at first I was sizing the American .358" bullets to .356". But after a recommendation from the rifles former owner I started using them at full size.

The 9X56 is not a high pressure shell so it didn't seem to hurt a thing,and the full sized .358 bullets actually shot better.

So rifles with throat dimensions large enough to emit a larger bullet may be best used with that larger bullet. BUT remember things like jacket thickness can and will effect pressure, so every bullet would have to be worked up from low pressure loads to stay safe.