Some years back a cousin of mine brought me an Ithaca 37 to look at. It belonged to a friend of his & was having problems ejecting hulls (After firing). On opening the gun the extractor would jump the rim & leave the empty hull fully in the chamber. It belonged to a friend of my cousin & had been to a couple of "Gunsmiths". One had put in a new extractor. Don't know what the other did, but neither had helped him.
I took the barrel off, took one look into the breech, there was a big rusty spot about midway of the chamber. I went to the shop, removed the rust "Bulge" & then polished the chamber with mild abrasive so as to smooth it but not remove any measurable amount of metal.
The owner had sent along some of the shells which were giving him trouble. We shot several of them & they all ejected fine. My cousin moved to a different location a couple of rs later, but last I had heard it had given no more problems.
