Am kind of at a loss here and hoping someone can be of help. I have a Ruger 10/22 that is giving me fits. This particular gun had been shot with a variety of different ammo and I must admit that outside of running a bore snake through it, it had been neglected. Yes I know, very stupid. The problem that I've been having,even after a more thorough cleaning, isthat at times it will eject/feed/fire properly but other times it will chamber a new bullet but will just click when I pull the trigger. I will enject that unfired round and then chamber a new one will fire just fine. Sometimes two in a row will go bang and then back to just a click. I have been running SK HV target rounds lately. They are very waxy and high dollar but I don't really care for them. Ran some Federal Automatch through and still had the same thing, which I ruled out it was just bad ammo. It was happening with all of the mags so I ruled out just being a bad mag. I am fairly new to the sport so I am not sure what route to go. I'm sure there could, and hopefully is, an easy and cheap fix. Thanks in advance for the advice!