I have been reviving a long neglected Win 69A, a .22LR bolt gun. I replaced a couple parts and got it to functional, almost. First trial at the range, gun fires but case doesn't extract. Took a cleaning rod to pop it out. There is a small burr on edge of chamber, no doubt from dry firing. There have been and are chamber ironing tools for this, but I didn't have and didn't want to spend $40 or so on something I might never use again. I think on here someone mentioned that a #1 drill bit is about the right size for a .22 chamber, .228". Bought two from local hardware, for $3. They mike about .228" at the tip, a thousandth or so less at the base. I took a 3/16" socket, 1/4" drive, clamped in a drill press vise and drilled out the socket part. Then hacksawed off a piece from the base of the drill bit. Tried to solder it but that wouldn't stick so I used JB Weld and glued it. Then put an angled flat on one side and polished good with a buffer. Just used a file and emery paper before the buffer. With an extension and a T-handle, I could turn the tool and felt the burr going away. Back at the range, some, but not all, cases would extract. A couple more tries and most would extract, but not all. So I took a 3/16" brass rod and cut a thin slot in the end. A tiny strip of 1200 grit paper, then some cloth with tripoli on it, both spun with an electric drill, seemed to finish the job. Now at the range, 100% extract. Hardest to get extracting were the PMC Zappers, but they are 100% now. I am attaching some pictures, I hope it helps someone. If there is a better way, let me know.