I just baught a new ruger 10/22 from wally world. Out of the box this gun has jammed. I have tried 5 types of ammo so I dont want to hear that the ammo is the problem.I tried federal,winchester,remington thunder bolts, cci mini mags, and blazer. I baught 2 new clips for the gun one aftermarket and one factory. They all three cause jams. Now I am not talking every 50th round jams I am talking 4 out of the 10 rounds will "stove-Pipe" If you will. The gun is clean without any oil. very little lubricant. The only thing I see that might be wrong is that the end of the extractor where it grabs the shell is cut or mabye chipped at a 45 deg. angle. half way across the end. Is this normal??! It just keeps not wanting to spit the shell out of the action. It always feeds a shell to the chamber but it just doesnt always kick it out.This causes a heck of a jam. I dont know what to do!!! Please Help me!