That does sound like a problem. I have had several push feeds, and never had the need to jerk so hard. What happens if you pull the bolt back slow? Brass stays in there. Danny might hit it on the head with the plunger. What I would do is pull bolt back slow and let the brass stay binded, and see where the other side (other side of the blade ejector) is getting caught or see if the plunger is jammed in the bolt.