Determining barrel looseness

[Tom]

Dean
I did something similar, I used 400 grit paper with a lot of oil. I kept trying to close the action and sanding off the wear marks. It took a few hours and I feel the fit is about as good as it gets, I am very pleased with the results.
I am a little hesitant to get out the welder and rework the hook on the lug just to move the barrels back two or three thousands, not sure it's worth the work.
I just tried the paper trick that Brian suggested, the paper can be pulled out of the left barrel breach with resistance. It will not pull out of the right barrel breach unless I really tug on it.

Thanks, Tom

[Chris T.]

Tom, I wouldn't weld the lug, your looking for disaster there. Just make a shim out of .004 brass shim stock and wrap it around the hinge pin.