Stay with it and you will surely find your M70. Mine is now resting in a speckled McMillan. It’s seems to be the first one picked when I open my safe.
Featherweight .308/McMillan? What's your 3 & 5 shot accuracy look like?
***
Also, what's the difference in barrel contour between the Sporter and the Featherweight? I don't want a pencil barrel.