Your western ranger .22 LR revolver is probably made in West Germany by ROHM, and imported into the US.
These are modest quality guns, using un-heat treated parts. Your description of non-uniform chambers with rough finish is typical of their production. The rough extraction can be improved somewhat by using very fine wet-or-dry sandpaper on a wooden dowel with a saw slit down the middle to hold the polishing paper. Remove cylinder from gun. Turn by hand in each chamber several times, remove, clean, and examine the chamber. Do not over polish. The goal is to remove most of the rough reamer marks left during manufacture. When polished to your satisfaction, clean all parts using solvent (paint thinner, alcohol, etc) and relubricate. That should improve the hard extraction you have.
