Little problem. Shot it for the first time today. I was using Hornady 110 gr V Max Whisper, but it would not cycle, after every shot you have charge it. In some cases the brass wouldn't even eject properly, would get caught in the action. What could be my problem? Was it the ammo or is something not right? would the buffer size have anything to do with it? Now this was my first AR build, so not sure what's the deal here.