Hey Steve, was wondering about you the other night. Hope everything is great with you and the family. Have a gun at Andy Horvath right now, remember when I left the first gun with him. He had a Ruger GP 100 that was converted to 41 mag and the barrel was a Python. It was Just finished and being sent to the owner and he showed it to me. He is good but getting older. He is capable of doing this.
I have stumbled on Smythons on GB but they end up going for high prices.
Finding a Python barrel is tough and expensive. Good luck with the project, hope it works out. Larry