I just got a mini 14 (181 series stainless) today after reading how reliable they are etc I was looking forward to trying it out. However after firing 30 shots or so it jammed on me 3 or 4 times. When it jams the empty casing gets caught sideways instead of being ejected properly however a new shell makes it into the chamber and I have to remove both the empty case and the new shell from the chamber before it will fire again. Is there something that needs to be cleaned or adjusted (it seems to be pretty clean already)? I have read that most people find that the casings are ejected into the "next county" however mine seems to only go a couple feet like most other guns I have used.