The 338 Federal has its' virtues but competeing with a 7 mag as a LR cartridge ain't one of them.
Man, isn't that the truth.
For me, the main virtue the 338 Mexicop is the bigger hole it requires in the barrel of a Kimber MT 84M, thereby shedding another 1.5 ounce. Dat's it.
Aside from that, I see no virtue in the round over a 308 Win. I'd sooner run a 180 in a 308 Win than a 180 in a 338 Federale.
Is that a thread killer or conversation starter? It's a little late at night to tell which