I’ve had my K22 since early 60s, got it NIB on a trade. It has extracted hard ever since. The K22 impressed a lot of guys with its accuracy. Not many had a handgun and if they did it was a H&R, IJ or such. The only time I shoot enough that extraction is a problem is targets. I wouldnt ream my cylinders and chance loosing accuracy. I keep it clean and put up with it.