My .270 WSM is a Win M70 24" bbl.
Winchester Supreme 140-gr Fail-Safe = 3146 fps (factory spec is 3125)
Winchester Super-X 150-gr Power-Point = 3137 fps (factory spec is 3150)
My 22" bbl Ruger M77 .270 Win shoots my 140-gr handloads in the 2950-2990 fps range. I have never chronographed any factory ammo from this rifle. The WSM Winchester 70 is more accurate as well - I'm not looking back anyway, I like the .270 WSM
