First, find a factory rifle in 7mm anything that has a twist rate that can stabilize the highest BC 7mm bullets, hint, at least 1-8.5". Second, find me a factory loaded 7mm anything round that has a COAL around 3.6" that is loaded with 175 grain or above bullets. Let me save you some time... they don't exist. OK, that's a little hyperbole, they do exist, but they are expensive and in short supply. The Hornady formula is to create factory ammo loaded with heavy for caliber, high BC bullets. Then, because the SAAMI spec is correct, rifle manufacturers can build rifles with fast twist rates so you can shoot the heavy for caliber high BC bullets.