I know this is not what happened because I had just fired a round. When I reloaded the ball got halfway down and stuck. I had only fired one round that day before this one, so the weapon was not fouled. I believe, I accidently got a hold of a ball a bit larger than what I usually shoot and it jammed, or I wasn't watching and got 2 patches on it. Whatever I did, I will find out shortly. It is not the first mistake I have ever made, but maybe it will be the last. Although I doubt that.