There are a whole bunch of actions that use SS bolts without any problem. If Forbes/NULA has such tight tolerances that it's a no/go, then so be it. I personally see it as an issue.

Not only because it is marketed as a stainless rifle (and it's only partially so), but also because an action with such tight tolerances bothers me.

The first purpose of a bolt action rifle is to function well. This is more important than absolute accuracy. I've noticed my ULA is so tightly put together that it doesn't like to operate real well when dust or particulate snow is introduced to the action. It works, but the amount of debris that makes it sluggish would not even be noticed by a Mauser 98 or a Ruger 77.