I've killed an Antelope, a Muley and a cow Elk with the 140gr NAB out of the regular .270 Winney. Not a ton of kills with it, but it performed very well in all cases. If I was working up a load for the WSM, that's the first killin' bullet I would try.
My T3 in 270 Win loves the 140 NAB. Animals shot with it hate it. Yet to recover a bullet as all have passed through. Performance has been stellar with good wound channels, broken shoulder blades and exits not hard to find. Not much I wouldn't tackle in NA with this rig.
