from what Ive read and seen on different site the only advantage with a wssm's over the original cartidge is the shorter action. I came to this concusion by looking at ballistics. but if you want a hunting catridge in wssm i would go with a new 25 wssm, it has heavier bullets then the 243. I already have a 243 it works great for deer and my dad used it for moose for many years. a 270 wsm would also be a good choise for a lighter kicking catridge compaired to the 300wsm. but if you get a BOSS on a browning rifle it will reduce your recoil greatly.heres a link to compair a 25 wssm toa 25-06 there the same thing just action length is the only advantage.

http://www.winchester.com/products/c...t=MjUgV1NTTQ==

http://www.winchester.com/products/c...YgUmVtaW5ndG9u