The 280 (aka the 7mm Express)is a great cartridge. Like others have said, the efficiency and range of the round are unparalleled. I've successfully hunted Elk, Deer, Caribou and Antelope with one for almost 20 years. You won't regret getting one.
As far as the earlier post goes, you should be suspicious whenever someone tries to convince you of something based solely on conceptual Angular Momentum or any other mathematical construct. The theory of Momentum allows that a bumblebee, going fast enough, can stop a freight train in a head on collision. I would hope we all can see the lack of common sense and life experience in that kind of thinking.
