Basically the only advantage to the wsm is a lighter rifle. I have a .300wsm and it performs ballistically the same as a .300 win mag.The .300 wsmhas the advantage of the shorter action and lighter rifle. Recoil is the same. Personally I would just get a .270 instead of the .270wsm. Ammo is much more available and a way better selection of bullet weights in factory ammo. The .270 wsm did not sell well like the .300wsm or .325 wsm. Just my 2 cents worth.