I ass-u-me that you are talking about the 7mm Rem. Mag. I have used it for whitetail and mulies and elk. Unless you can place your shots exactly, it destroys too much meat on a deer. It is fine for elk and moose using the 175-grain Nosler Partition bullet.

However, 7mm (.284") is a great bullet diameter. For deer, I prefer shooting my 7mm bullets out of a 7mm/'08 or a 7X57mm cartridge. Properly loaded, even the .280 Remington is on the heavy side for whitetails! With factory loads, it is about like a correctly loaded 7X57mm.

For a guy like you who is familiar with the .270, think of a cartridge like the .280 Remington as a .270 with a bullet that is 0.007" bigger around. As a matter of fact, you'd have a plenty difficult time finding a 7mm that is a better whitetail round than theplain ol' .270 Winchester!