I recently acquired a very nice CC Johnson marked  12-15 type Martini from Sam Lough.  I'm trying to track as much history as possible about the rifle.   It has been very nicely stocked as a position rifle with a hand-stop rail inlet into the forend
According to Jerry, His grandad's shop records show it was made in 1937 for a U. W. Barker of Springfield, Ohio on an imported action.  The shop notes indicate it was a "fit" a "#2 barrel". 
I had initially thought that might mean fitting a whole new barrel but closer examination shows clearly that it was a reline job.    

I'm not that familiar with relining but the modern liners I have seen are fairly thin walled.  This liner looks far more robust

Does anyone know anything about the old shooters in the Springfield area.  or does the name Barker ring any bells in our community?  (not Croft Barker-- JCampbells nome-d'plume)