There's certainly nothing wrong with giving it a good cleaning, but before doing much other than the basics, I'd try different ammo. That usually solves the problem. My K22 likes Federal Champion. Brass was difficult to eject with CCI and a couple other brands I don't remember, but no problem whatsoever with the Federal. I can shoot four hundred rounds without any cleaning, and not a single case will have any difficulty ejecting.

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Peter
S&WCA #2620