Remington is famous for dumping their own developments. I think the Seven will die out soon. The 300 will survive even though its in a crowd of simular performing cartridges. As far as performance goes, nothing sets it very far from the 300 Win Mag,300 WSM 300 Weatherby and 300-378 Weatherby. Even the 30-06 and 308 are in the ball park for the animals they will take. Folks seem to like lots of choices but the 308 caliber is a mainstay in America.