My wife has a 10/22. A couple of years ago I cleaned it and when I put the bolt back in, the bolt would not operate correctly. I don't remember exactly what the bolt was doing, but I got out my manual and kept looking at the rifle and then I saw what I had done. When I had put the bolt back into the rifle the ejector had flipped around and was facing towards the hammer. Look at your Ruger manual at the top of page 33. The ejector, part B-8, must be pointing towards the front of the bolt and laying in the ejector slot before you install the bolt into the rifle. The ejector is mounted in the bolt in such a way the it can flip around and face towards the back of the bolt. You will still be able to put the bolt into the rifle, but it will not operate correctly. Lock the bolt back, and look into the opening. Do you see the black ejector sticking out? If not, you did the same thing I did. Remove the bolt and flip the ejector around so that it is facing forward and reinstall the bolt. I hope that this helps you.