Originally Posted by emn83
The Hodgdon website says that the powder is tailored for specific calibers
I suspect that they use a caliber-specific version when they load Hornady ammo, and what they sell to us as the general public is a "generic" version of the Superformance powder. Otherwise I can't think of how Hodgdon is special enough to make its one formula of powder work for some calibers but not for others. You may see a difference in some calibers more than others but nothing worse than that. Your rifle won't blow up just because you used it.