Its an even better deal if you don't reload. I mean that factory WSM loads are 150-200 fps over factory 270 Win loads. In my reloading I can gain some with the 270 Win. over factory loads. You will have a tougher time trying to gain any velocity over factory loaded WSM cartridges.

Most of the factory loaded ammo that I have chronograghed read about 3275 for 130 grainers and right at 3200 for 150 grainers. My most accurate hand load so far has been the 130 grain Sierra Pro-Hunters which grouped half inch but clocked at 3050 fps which I can also reach with the 270 Win. HOWEVER, the WSM is idling at 3050 and the Win version is really straining.

I love them both and as a deer and elk cartridge, I am confident with a good bullet in either.