I don't live out West, so real long shots are rare.
But, I can tell you this. The 7 Mag absolutely sucks if you have to shoot a deer at 75 yards or less! I have done this on three differrent deer. The rounds are so fast, that they just blow through the deer, with very little or no expansion. (Factory 175 grain rounds, Rem core-lokt.) I retrieved all deer, but only after multiple chest shots. Very Embarrassing!
The 7mm-08 andr .280 Remington are much smarter choices.
Mannyrock