"A shoulder is placed where appropriate for headspace".
I'd say this fairly well encompasses the idea of a false shoulder, which takes but a stroke of the press, same as any other. I don't recall asking about Ackley chamberings being overbore, or accurate, or slow, only how fireforming a wildcat is "a completely different beast". A properly sized and loaded round doesn't care if it is about to become an Ackley, a Gibbs, a Mashburn, or a Weatherby. A pull of the trigger produces a formed case nonetheless, even with the wildcat 6.5-06AI in question.
