When I first received my 22 TCM pistol I experienced FTE on 80-90% of rounds fired. This is much more severe than reported elswhere. I examined my cases and noticed "bumps" on the cases. I then checked out the chamber wall and found that there were small voids on the wall of the chamber which matched the "bumps" on my cases. The case was expanding into these voids and would not extract. I too had to use a rod to drive out the spent case. I called Armscor/Rock Island and they authorized me to return the pistol for warranty service. I have received the pistol back (very good turn around time) and the return invoice/packing list stated that the barrel had been replaced and tested for reliability. I have fired 120 rounds with perfect function. All is good!