I just don't get why the 7mm WSM isn't catching like the 270 and 300...its much easier on barrels than the 7mm Rem Mag.
The 7mm WSM may be the best of the bunch, unfortunately it is also the one most likely to go under. This is my understanding as to why.
The 300 and 270 hit the shelves first. Shortly before the first 7mm were to go out Wincheater discovered it was possible to chamber and fire a 270 WSM round in a 7mm WSM rifle. They delayed introducing them until they could make minor modifications to prevent this. By the time they got on the market the 270 WSM ahd a big head start and the 2 were too close in performance for folks to take a chance on the 7mm making it. Sorta the same reason the 280 will never replace a 270 even though it offers better performance.