The spent rounds eject easily. I suspect that the rounds that might be binding up are unfired rounds. I have one unfired round from this gun that has scrapes marks on the head. However, I asked myself the same question. Why don't the rounds that slide out simply slide back in rather than bind the cylinder. My theory is at that there is just enough friction between the head of the round and the face of the recoil shield to push the round to the side when the cylinder rotates, causing the round to cock and not retreat back into the cylinder which results in the binding. Right now that's all I can think of. As I said before, I have an unspent round with scrape marks on it. Thanks for the replies.
S.K.