Still is a crappy deal, but at least you are refunded and on towrds something better hopefully.The gunsmith finally replied and will take the barrel back for a full refund.
I lost 10 months but at least it will be solved without litigation.
A different gunsmith will build the barrel for me. Lead time 20 weeks, but he's reliable easy to communicate with and has a track record for building good prs rigs over the last few years.
Downside is that I'll have to settle on Lothar Walther, which isn't too bad in the end, though.
Fill us in when its done.