Most deer? I would say all deer. Moose aren't even immune to that 7mm Mag. Look at something simple like the 160g Nosler Partition loading by Federal. Out at 400 yards its still traveling at 2200 feet per second and carrying 1730 pounds of energy. I would take that kind of performance on moose any day. If you're handloading you can obviously do better, however the cartridge has been around for so long and has been so popular there are a ton of great off the shelf choices.