I can live with the term UN-FIRED meaning AFTER it was obviously test fired at the Factory. AFAIK there are no guns shipped from any Company that are actually unfired - meaning they ALL get tested.
If no rounds were ever shot AFTER shipping I am Ok with calling it unfired. Purists will say there is no such thing as an unfired gun and technically they are correct, but to us collectors, accumulators and enthusiasts ............
The problem of course is that you can't tell the difference between a fire arm that was only test fired at the factory (perhaps more than one test fire session, if it needed work after the first test fire session), and a firearm that was fired a few times after it left the factory. In fact, it could be the case that a revolver fired a few times by the first owner has been fired fewer times than a revolver only test fired at the factory, that had an issue that needed correction.
In short, a claim that a firearm is "unfired" is solely based on:
a) the seller being honest; and
b) the seller actually knowing the entire history of the revolver.
If the condition of an "unfired" and "fired revolver is the same, I'm going to pay exactly the same for them, regardless of what the seller claims or is honest enough not to claim.
There's no such thing as "unfired" and it's pointless to claim otherwise.
It's much like "new" versus "like new in box". It's either "new" or it's not. If it's had a prior owner it's no longer new, and we understand this very well so we call it "like new in the box", rather than claiming it's still "new".