It was a definite jam. I was loaded 5+1 in the chamber. The jam occurred after the 1st shot. The bullet was lodged halfway on the ejector with the lever stuck open. I initially thought that when I ejected the first shell I did not completly cycle the lever to the wall however the gun jammed again when I was testing it in my workshop a few days later. I now think I need to disassemble and clean to fix.