Cleaned it throroughly. Removed some of the heavy, sticky grease-type material which was around the chamber. Oiled it, perhaps a touch too much.
Then, put 75 rounds of Heavy Target Loads through it. Flawless. What a shooter!
Because I had left too much oil in it, it was a touch dirty because the oil seemed to catch some of the debris. I then shot another 50 rounds of light target loads through it and voila, not a single failure to eject or cycle. After the heavy target loads, man did the light ones shoot like a joy. Felt recoil was almost non-existent.
Thanks for the help!!!