S&W K frame 22 lr cylinders are know for having minimum sized cylinders which causes some to have ejection problems. I, for one, have ran a 22 lr finishing reamer through all of my chamber and have yet to have an ejection problem with any ammo and I have a model 18 that has had well over 500 rounds through its cylinder and ejection is effortless. Kind of an experiment at this point.
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