RE: Winchester SX3...
I've got an x2 and love it feels good swings good and shoots well.
I've heard that the only difference between the x2 and x3 is they've overbored the barrel to reduce recoil and the changed the action a little. I've never had a problem with my gun and never noticed any harsh recoil.
i'm 5'7" and 160lbs and have shot lots of 3 1/2 BB thru it no problem with recoil.
gs