I have been working on this intermittently since I originally posted.
This barrel is from and earlier Nitro special but my receiver is a later receiver. It just so happens there is an earlier shotgun in a local gun shop that I looked at today and observed some differences.
The earlier gun has a little recess in the water table at the lever trip hole and the area "B" fits down in that recess and the recess allows the raised area "B" to drop down below the water table allowing the barrel flats to sit down on the water table. The later receiver I have does not have this recess so I flushed the raised area at "B" down equal to the barrel flats.
I have been using a sharpie marker up to this point but I feel I am getting down to the critical last adjustments so please feel to chime in.
This is what I am working with prior to blacking with the sharpie marker.
I can get a .005 feeler gauge in at both sides close to the breach but it is tight closer to the pin. I cannot see any light now between chamber face and breach face.
This is what it looks like after blacking and setting the barrel 5-6 times.
Thoughts?
Many thanks
Travis
