Re: stealth II 308 scope base
I do not have a Stealth ll in .308 but my .223 WSSM required a unique base since the WSM/WSSM rounds have a slight change in the hole spacing from the short action. You can get the correct base from Warne, that is where I got mine. You could also check with Marty at Badger Ordnance, I know he makes a base for the WSM, not sure which action the .308 is on tho. He will know.
Good luck, I went through the same thing.