Might have part of a case broken off in my chamber?

[demontang]

So my AR hasnt been wanting to close fully. I tried factory .223 ammo and still have problems plus its heard to open when it does close, I mean like all I can do to get it to open. Its a 5.56 chamber and I can seen a line around the chamber and you can feel a edge with a cleaning rod right where the line is.

[chrisb]

They make a tool for the removal of broken cases. Brownell's should have it... maybe even CTD?

[demontang]

The wierd part is that I can chamber a round but its a bear to unload it if I shot it there is no problem with it kicking the empty out so Im not sure what the heck is up.

[demontang]

So after all this I went and bought another box of factory ammo and it seems to not jam the bolt. I did clean the chamber for a long time and that line is gone but the reloads still don't fit. So it seems like I got a box of ammo that doesn't work and the reloads don't but this new box is fine. I measured the cases in the reloads against the box that works and the cases measure the same I just can't measure the base to shoulder which has to be what's wrong. I think that line was kind of strange which so did the two other people that looked at it.

[Gutpile]

Think I know whats up. I sent you a PM.

[chrisb]

Think I know whats up. I sent you a PM.

Care to share the wisdom with the group?

[demontang]

We are thinking that maybe the seater die got turn in far enought to touch the mouth of the case and bulged the shoulder a little. As for the factory rounds that dont work I have no clue the other three boxs of factory ammo work.