Tomato - Tahmahto
The 7x57 is a great cartridge and 1 of my favorites, I currently have 8 of them. I've never been a 280 guy, so I only have 1 of them and only bought it because it is a Ruger 77R marked 280 7mm Exp Rem. Ruger says that they never marked any barrels that way, but there it is.
I have 3 7mm SAUMs, so I can get 280AI performance out of a slightly shorter package.
Not that it matters, so carry on.
Jeff