First time post... 20ga. GH D... with 28ga.

[Double Play]

John,
That’s a very nice looking and desirable Parker. It looks as though someone with a lathe made up a set of inserts that allow the extractor to lift the shell similar to the Chamber Mate inserts now available. I would think they are just pressed in as I see no signs of welding. If that’s the case you should be able to carefully tap them out. If you try this go easy and if they don't move easily have a gunsmith remove them. Good luck with that wonderful Parker.

[Autumn Daze]

What great gun! As Larry stated if you can CAREFULLY remove the inserts try to do them no harm.After you remove them I would have a competent double gunsmith check the chambers to see that they were not altered to fit the inserts.And have the barrel wall thickness checked also.It looks to me that whomever turned up those inserts knew their stuff..

[Bill Murphy]

In my opinion, if those are 28 gauge tubes, the chambers were bored out to larger than 20 gauge chamber dimensions. Have you ever put a 28 gauge shell in the chamber of your gun? I have my doubts that it would fit. If you need more information, send your gun up here for a professional look see.