Now I may be wrong on some of the facts, but the base of my question I hope is easy to understand.
If the new dar rings are 20mi, then the old were 10mi as they were seemingly doubled. At the 10mi mark, the 5" was a useless toy trying to hit something at such a distance. Only the 8"'s could do such. Now, when flying at 25-30k alt in a bomber, puffy ack begins to go off. The distance at that height is 4.7mi to 5.6mi. Now, while typically the 5" could hit this on the ground, how on earth can it not fire 10mi with a relatively flat trajectory, yet can fire approx 5mi+ straight up? (this also assumes puffy ack is automated 5" by the potential damage output I have seen)