I have heard a bit about the 300 WSM and it seems to be a nice round. PLUS (IF Ive got my story straight) being a short action is a big plus in my book.
Only downsides are :
-high cost per round.
-doesn't offer much terminal advantage over other .30 cal cartridges.
-doesn't offer much extra range over other .30 cal cartridges.
Lot cheaper to shoot then my 338 winmag
Here in Canada the 300 wsm is about the same cost to shoot as the 300 winmag
I have shot moose with both a 308 win and 300 winmag and my experience is the 300 hits with more authority
It will have a slight terminal advantage over other .30's, but not much.
The effects on your target is not an accurate measure as you would think...there are too many variables in this (ie shot placement, bullet performance etc.
The wound channel will be larger but not as large as switching to a .338....
The best way to increase wound channel size is increase bullet diameter and profile, velocity has less of an impact than these factors.
This is what I believe to be true anyways....
