Yes,
This is what I found out:
The chambers measure .805 at the breech end whereas other 12 ga I have measure .815 or so. This should not be a problem because I can push easily any 12 ga round in each of the barrels. Unfortunately the obturator disks are not in absolute perfect alignment with the bores, therefore the increased friction.
I smoked the inside of the chambers and this is what I saw:
I hope you can see the bit of black smoke on the side of the brass.
Can I polish 5-10 thou of the chamber with a wooden dowel and emery cloth or I need a chamber reamer?
