I like shooting these guns. They are easy to reload for and as I have a number of "short tens" I shoot them for waterfowl and the occasional spring gobbler- a 32" #3 frame D2 Parker toplever hammer (that also has a set of 32" Belgian made steel 3 1/2" barrels), a 30" #3 frame PT toplever hammer, a 36" D2 #3 frame GH and a rather nice Lindner Daly A&D action with 30" Damascus barrels and 32" 3" 12g and 32" 3 1/2" 10g fluid steel barrels added by ARMAF the same Liege firm that added the magnum barrels to the D2 Parker. (see below)

12-10 convertible
 

I have no way to measure as I have no guages.
i do know that the BBLS were shortened at some time as well.

George if you can find a smith who has and knows how to properly use a wall thickness gauge it would be most interesting to know how your gun measures. You have a most unique Parker 10 bore.

For reference on Dean's query, I have a nice set of #2 frame D3 barrels #56815 that I just measured with the following dimensions- 32", 5-13 unstruck weight, 5lb 4 oz currently. WT@ at chamber end (2 7/8") is .120", WT at 12" from breech is .075 and the MWT (in a quick measure) is .060. The bores are both .790. These were with Russ Bickel at the time of his death to be added to my D3 32" #2 frame 20 gauge #186822...got to find another 'smith to do that job. I am going to miss Russ and his Moldmender micro wonder welding for tightening and barrel fitting.

don you certainly have some very interesting 10 ga s ...i really like the sound of those 36 inch barrels...appreciate the telling about them and the pictures.... charlie

12-10 convertible #55861
 

Pete- here is the letter. I just learned to attach stuff so hopefully it works.

The barrels are now 25 or 26 inches long so 2 or 3 inches were removed. Front sight is nicely in place so it looks like a professional (Parker?) job.
wouldnt some of the barrels HAVE to be removed to go from 12 gauge to 10 gauge?

Thanks for sharing. The gun is a Grade 2, a GH rather than a Grade 1 or PH as stated earlier, (Dam vs. Twist). It would still be interesting to learn of the bore ID and barrel wall thickness after the rechambering to 10ga. Two dollars went a long way back then! I wonder if the gun was severely pitted and rather than overbore a 12 they made it a 10???

Pete
My bad on the grade. I have called it a PH ever since DelGrego called it a PH 12 in 1991[I can show you the letter!!]. The receiver is so dark with corrosion the engraving is hard to make out.
It is a 2 frame. Damascus markings. Can't see any patterns at all.
Now that i have learned, I will post some photos.

anyone have a 10g 2 7/8 recipe for black powder or pyrodex rs etc?wad load charge etc?thaks everyone!

Sherman Bell provided recipes and data for two BP loads in his work. You can find those and a bunch of smokeless loads for the 2 7/8" 10ga here, reference my post of 5/3/12 for the most current spreadsheet. Both BP loads used FFFg and are on page 3 of 3 of the spreadsheet. You probably can't mess up a BP load in the 10 except to undercharge it.

http://parkerguns.org/forums/showthread.php?t=6282