I have a Browning (Belgium) 20 gauge auto-5 3" magnum. The shotgun cycles beautifully with 2 3 /4" shells but will not eject 3" shells. In both cases, I am 99% certain that I have the friction rings in the correct position. The 3" will eject, however, when the shotgun is set up for the lighter recoil. Is it a matter of lubrication or bad rings or...? Thanks for any help
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