I doubt you were going to get a whole lot of custom chamber cutting on a Nitro, or, a Western Arms gun, back in the day.
I use my 16 NS when I have to use non-toxic loads. A gent was selling some of the older Heavi-Metal 16 gauge loads, that, apparently were disappointing for use on waterfowl. I will say the hulls are cheap, but, the grouse go down just fine with them:
The area this picture was taken at is under Federal managment, which, really means it is either not managed, or buffoons manage it. Their vision for the area changes every decade or so. Of course, waterfowl hunting is prohibited, and everything else is non-toxic.
1937 vintage, this one was always 2 3/4":
On a lark I bid $257 for this gun, that had furry surface rust on the barrels. A guy here re-blued them, wanting to polish them to 600 (Ixnay) coat them with varnish (Nada) and make them an example of higher grade work then they really are. Polished to 320, rust blued, and looking "right" on this gun. For reasons I can only speculate on, the rest of the gun, looked like it had just come out of the box. The gun came from Maine, and somebody must have thought they bought their perfect grouse and woodcock gun in 1938, or so, and then never went hunting.
Nice weight and balance:
By 1937, the stocks with 3" of drop were gone. Hope your Nitros bring you lots of fun out in the field. I used to own a Western Arms 12, that was in even better condition, but, some depression era soul had specified, in 1931, a single trigger, that cost $5.00.
Never took to that gun.
Best,
Ted
