sd watt have you bought any of your listed lathes with YOUR money?I don't mean where you work. They are all very expensive and 3/4 of the time worn out. I have personally owned over 30 lathes now, bought with my own money, including Schaublin's and a Wieler. I would never recomened a used lathe to a begining gunsmith machinst, there are way to many pitfals.
I have only seen one gunsmith with a lathe of your listing, a fellow that had a CVA. What kind of lathe does Kenny Jarret use?, a Korean made Webb lathe. Almost every pro gunsmith Lathe I have seen in Precision Shooting is Tiwanese or Chinese. Ask Bill Leeper what his recomendations are.
How about a Colchester Lathe, nice expensive european lathe, that has been made in Tiwan for the last 20 years!! You can buy the exact same lathe from First for a little over 1/3 the colchester price.
A hardinge is way to short between centres for gunsmithing uses in general. Guess what, even Hardinge buys clones of their tool makers hlvh lathe, for use in manufacturing their own lathe!