WB
Last .38-40 I actually slugged mic’d 0.403”
Tuesday, March 10, 2026, 16:38

It was an ancient New Service from the 1920’s. It wouldn’t hit the side of a barn. The chamber throats were about 0.400” or maybe less! I figured the bullets were being sized down exiting the chambers to rattle down the bore. I took some emery cloth, and a whole bunch of polishing (x6) I had it where the bullets would slide through the chambers. That fixed it pretty good. As long as they start out bigger than the bore, it will size them down.