I took the wife out to shoot tonight and she always picks the Wolverine in 177. Well she was shooting and she had a hard time closing the breach on a pellet and after that shot, the next thing I know is that the gun is making a "bark" of air where the magazine is loaded. Could she have broken the breach o-ring? I haven't take it apart yet, but wanted to ask the folks out here that may have had this happen to them in the past and what did they do to rectify it. I don't see any parts of an o-ring anywhere, but clearly the air is escaping at the breech area each time the gun is shot. It is (was) my quietest gun, but now the squirrels are laughing at me!