Absolutely.....and that's a major point IMO. If I wanted to shoot 165-180 grain bullets the .30-06 and .308 offer me featherweight rifles to do it with.......The single greatest justification for a .300 mag of any kind is to launch heavier bullets at long distances. Frankly, I see little advantage to send a 150 grain bullet 300'/sec faster than the old '06 can do. The magnums are primarily for heavier bullets and larger game.

The argument that the faster bullet will increase your range is a valid argument.....but I personally don't know anyone (including myself) that can make use of the difference.....we're talking about extreme distances now and the differences become mythical real fast.