I think in the early days the 7mag had a checkered reputation, simply because pushing a cup core bullet over 3000 fps is asking for trouble and there were enough hunters that didn't realize that and figured the word magnum made it a magic death ray.
As with any caliber, use good bullets and place them where it matters and it'll work just fine. With modern bullets that hold together at higher velocities the big 7 is a fine big game round.
But when you start talking about modern bullets, you can consider more modern chamberings and guns and perhaps choosing a lighter short action rifle if going with a 7.
