Riflenut.....that was poetry. Very well said. I couldn't have said it better.
A few that riflenut forgot and i'll just add these to confuse you even more....
7-30 waters and the 7x65R....
Also, remember when buying ammo that there are 3 different types of "Remington 7mm's" out there. They are:
"7mm-08"
"280 Remington" (also know as the "7mm Express Remington"
Same exact bullet, with two names.
"7mm Remington Magnum"
All 3 being very different bullets that ARE NOT interchangable!!!!!
Now, with that said, the "7mm Remington Magnum" is probably the most powerful and popular of all the 7mm's. With the exception of power, yielding to the "7mm Weatherby Magnum".
So, to answer your question. Go with the "7mm Remington Magnum". Read and make sure your gun has those markings on it to be absolutely sure you're getting the gun you want. It may be abbreviated with "7mm Rem" on it.
Hope that helps you out. Very fine rifle.