The .270 wsm really needs a 24" barrel, the .270 win does not. The wsm doesn't feed as well either- very often.
Brass doesn't last with handloads either and I saw a cart cases that were jammed in FL sizing dies. Not me, but that was a chore to remove.
The 270 wsm is old news now.What about the new ' puffed up' 27 Nosler'/ fast twist?
For me, Iam looking for another 270 win, maybe a Browning / Miroku model 95. They are rare as hen's teeth.
My little old opinion.Good luck