Thank you all for coming through with good suggestions. I’ve have had a great success.
I used a brass casing to make a sleeve for the barrel and also cut some pieces up to make shims to protect the action. Wrenched on the action wrench tight but not super tight and wrenched the barrel into the barrel vice very tight. A couple of solid wacks with the 1lb hammer and I though I was getting nowhere. I then used some gorilla strength on the action wrench and to my surprise it moved! Spun right off after that.
Here are some pics of my setup in case some others are willing to give it a go.



I used a brass casing to make a sleeve for the barrel and also cut some pieces up to make shims to protect the action. Wrenched on the action wrench tight but not super tight and wrenched the barrel into the barrel vice very tight. A couple of solid wacks with the 1lb hammer and I though I was getting nowhere. I then used some gorilla strength on the action wrench and to my surprise it moved! Spun right off after that.
Here are some pics of my setup in case some others are willing to give it a go.


