If you look at this from a bolt gun perspective, you're missing much of the point. The case, like the .24 Nosler, allows long high-BC bullets to be used within the mag constraints of an AR. PPCs are designed around short bullets in slow twists for benchrest shooting, and also varmints as a sideline. Your Sako is twisted 1-14, IIRC, like a lot of 6x45 and 6x47 rifles, which is why stubby Nosler Partitions were popular for deer hunting with those. If the throats of the ARC rifles are long like the .24 Nosler, it may be hard to get light varmint bullets to shoot well.
