I believe that ammo is a major factor in difficult extraction/ejection in virturally all 22 cal Smith's. However, frequent cleaning of chambers and under the star ejector is equally important. I have learned over the years that running a brass brush just a few times, then a 22 cal mop in the chambers and under the star after 30/50 rounds will make a dramatic difference in extraction AND accuracy. Make a couple of passes down the bore at the same time. I keep a rod and brush with a small drop bottle of CLP or similar product with me at every outing....... makes for a trouble free day at the range. All 22 cal ammo is dirty by design.