Clean it, oil it and try different ammuntion. If none of that works, go to a gunsmith
You need the services of a gunsmith. There are about a half dozen or so reasons if not more.
First make sure that your shotgun can cycle 2 3/4 inch shells. To do this, read the barrel, if it say 2 9/16 shells then that is your problem. Early 16ga. Browning's were made to cycle 2 9/16 inch shells. Next, check your ring setup inside of your stock, it may not be set properly.
What I did was unplug the power cord from the back and then hit the eject again when it was plugged in again and it worked.
I have a model 1100 Lt 20 ga. magnum and it will fire the 2&3/4 shells but will not cycle or eject them. Someone told me that the holes in the barrel to let the gas escape are different on the magnum. I bought another barrel for 2&3/4 shells and it cycles them fine with this barrel.
Pull the fuse, wait a minute, install fuse.
You need the services of a gunsmith.
I wont tell you I wont tell you
Try unhooking battery. Then reconnect it. Then try ejecting it. Worked for me
Unplug it and then plug it back in and press eject that often releases the disc
The 2 most probable answers are that it needs a good cleaning,or that the extractor or ejector are broken.
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Give it a good cleaning. Try different ammunition. If neither of those works, take it to a good gunsmith