This Bianchi holster would fit your 30-1 perfectly. Not sure if they still make them, but I would look for an older one anyway. I understand the newer ones are made in Mexico, and the older ones are really very nice. Fully lined, and I see them for sale on eBay all the time. Real leather, and very nicely made, classic to match your gun. Your 30-1 is the same size as this 63.
It's the Bianchi #10L "Outdoorsman".
By the way...that was a great trade. That is a very good looking gun!
Best Regards, Les