Thanks Drew.

Does anyone know what the acceptable minimum thickness is at the forcing cone?

I honestly wish I could put this gun through proof testing. It seems so solid.

Oh and the previous owner told me that he put 10 gauge handloads through it and shot a round of trap (recently - probably also the first and last time he fired it). He inherited the gun from his grandfather and I think had no knowledge the gun had been altered from original. When I asked how old it was, he said he thought it had been made in 1910...