Ok I got it. It was a combo of penetrating oil, heat, 40 grit ceramic sandpaper, cuss words, and torque. I beat the hell out for the action wrench while swearing. There is definitely corrosion in the threads. I had gotten ready to cut relief in the barrel but gave it one more college try
For those of you that have asked, the action wrench is a wheeler engineering, the barrel vise was mounted into a vertical 2x6 with deck lag bolts and the structure of the bench is built just like a deck (16" centers of 2x6 with 3/4 plywood for the top) with 4x4 legs.

For those of you that have asked, the action wrench is a wheeler engineering, the barrel vise was mounted into a vertical 2x6 with deck lag bolts and the structure of the bench is built just like a deck (16" centers of 2x6 with 3/4 plywood for the top) with 4x4 legs.

