Jim, I'm not sure how long ago this was, but some person had the same problem and he couldn't get the Bolt to feed properly . He finally gave up and either was going to sell it or he found a older gunsmith that he took it to and he found out that whoever had it before or longer seen the Receiver was kinda out of line because of either by overtightened it while using a Rear Sight Tool trying to remove it or installing it and then it had bent a little. After doing some measuring he did noticed the bottom of the Receiver was out of whack and would not let that Bolt work like it should, but after being fixed it fed perfectly.