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

[Dean Romig]

Those inserts look more like 20ga./.410 inserts judging by the width of the lug and doll's head as compared to the ID of the inserts.
The gun does not look like it has been refinished at all, in answer to your question.

[Bill Murphy]

I'm with Dean, looks like .410 tubes. 28 gauge tubes in a 20 gauge chamber are so thin as to be fragile. Not these. Be very careful getting those tubes out of there. Your gun is very valuable and not hard to damage. Tell us where you are located and we'll recommend a talented gunsmith. They look like Savage tubes except that the Savage tubes are longer than three inches and the extractors are usually a little smaller than your extractors. Are you sure your tubes are only three inches long?

[Harry Collins]

John,

I am holding a set of Savage tubes to shoot 410 in a 20 gauge and they look exactly like what you have shown us. You may be able to pull them out by the extractor. The best bet is to get a wooden dowel and run it down the muzzel and give it a push or a tap. Be sure to hold your hand at the breech to catch the insert. It is about 14" long.

Harry

[John McKee]

Those are all great comments, Thanks... 410

I'll pull the gun out again and measure the inserts and try a 410 shell. From looking down the barrel. I'd guess the inserts are only the length of the shells themselves. That could be an optical illusion. So this time I'll do an actual measurement.

Whichever it was; looking at the clean bore tells me that nobody shot the gun. My Dad and Grandad were duck and goose hunters mostly; here in North Carolina. I live between Durham and Chapel Hill. If anybody knows a knowledgeable gunsmith anywhere close; please let me know. A machinist buddy of mine also suggested using a wooden dowel rod and a mallet.