Thank you for your help with the Marlin 38 which had poor to no ejection. Took it apart after your last post and checked the chamber opening. Sure enough, it had a small bump or snag on the opening, probably from dry firing by a previous owner. I ordered a .22 rimfire chamber ironing swage from Brownells. Used it on the chamber and it smoothed that opening. Didn't use a lot of pressure when inserting it into the chamber. Took the gun out yesterday afternoon and fired it a lot. Smooth ejections of fired cases and loading of new cartridges without any jamming seemed to be the result. She shoots just like a new one. The tool cost me $28, but I figure that as many old 22s as I have and like to buy, it will be well worth it. Thanks again for all your suggestions. I think you hit the nail on the head.