No argument, I was mainly talking my geographical area. Out of four places to buy factory ammo and rifles there is zero 7 WSM rifles or ammo available in my area while ammo and rifles in the 270 WSM and 300 WSM are common and with a good selection.
The .277 bullets have taken a good step forward this year, we now have 3 bullets with a BC .650 or better and there is more work in progress for some more. The 270 WSM is running a .650+BC bullet 100-150fps faster than the 7 WSM will run a similar BC bullet, with better brass selection it's a win win for me, but I'm heavily biased when it comes to 270 vs 7mm
One good 270 bullet is worth three 7mm's aint it
I think the 7 WSM will live in some areas due to support with gunsmiths and local stores and is DOA in others for the same reason.