I believe the .300wsm is way more popular, though the .270wsm is coming on pretty strong.....I think both are here to stay, but without a doubt I think the .300wsm is, the .270 is probably too, the .325wsm I'm not sure about?
I think for elk I'd really want a 180gr bullet over a 150gr, and for deer you can still use the 180's or use 150's. And with new cartridges always coming out and failing etc.....and the .270 not a sure thing just yet, get a .300WSM.
You already have a 270 on down....and doubled up on some rounds...243win, 243wssm etc....get a .300wsm spread em out a bit. Don't do it again with a .270win and a .270wsm....too close in my book.
Do you always talk in circles? No the 7 WSM is not dead...go out and buy one instead of posting useless dribble and then you can talk about it. It's very obvious that a lot of people own this so-called " dead" cartridge. Simple fix for "dead" cartridges you go out and buy 500 new cases of brass and reload or are you not capable of doing that. BTW Kimber and Sako still chamber rifles for the 7 WSM.
Deer and elk have become so tough to kill over the last few years I have had to switch my aresenal around a bit as well.I now only use a .30-378 Weatherby for deer and my trusty .338 Lapua Mag for elk.
I have recently heard that deer and elk are building immunity to these rounds as well!
Ain't that the truth
To answer the original posters question I would choose the 300 wsm if that is the choice I have over the 270 WSM but not by much...