Why won't an A5 16 gauge se 2783 eject spent shell as if the shells are too long for the ejection port?

If I am not mis-staken, some of the A5's had a 2 9/16 inch port and were not made to fire a 2 3/4 shell, and will do just as you say when a 2 3/4 shell is fired in these. Pre war 16 gauge Browning Auto 5's had smaller ejection ports. The purpose is up to dispute, but most argue it was to limit rain and debris from entering.

The correct way to measure the shell size is to measure from the face of the bolt. If the bolt is below the opening by 1/4 inch or more, you can use 2 3/4 shells. Another clue will be the barrel.

If it is marked with "2 3/4 shell" you can use a that size shell. Some 16's were assembled using mixed barrels and barrel extensions. I have a very old model that has a sliding ejector with a short barrel extension.

The number one cause of shells failing to be ejected clear of the port is a combination of the extractor on the bolt needs sharpening or the type of shell. Shells with crisp, flat rims will eject properly. Try a Win.

AA or Remington STS shell. I have all kinds of problems with Multi Metal, Fiochhi and other lesser cost shells not clearing the opening.

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