its a behavior related to ammo too weak to fully cycle the action. try some hyper velocity cci ammo. if the problem doesnt happen then you got your answer.
when i get a new 22lr ill buy various brands in 50 round boxes to find what works best.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent