I have an amazing 1983 Rem 870 PM with a 20" bbl. Excellent condition and the most accurate slugger I have ever seen. Problem. When shooting it I often eject a hull clean, but it does not pickup the next shell and the next shell is firmly inside the magtube. It has the stock extra-heavy mag tube spring.

So, is it possible to eject a hull clean and short stroke the gun? I don't think so... if anything I'd think the shell would at least leave the mag tube and jam up the gun, since the shell is left in the mag tube I'm thinking its a mechanical issue... experience or ideas with this?