Is the Model 11 the porkchop style of barrel?
I see them from time to time on EBAY, Gunbroker, & Auction Arms..
Do a search for Dan Wesson..
Good Luck on the barrels.
My 15-2 came with a 4" Vent Heavy barrel & schroud , & I aquired a 6" and 8" barrels in the Slim Tapered style and now never change the barrel and just leave the 8" on for maximum target accuracy.
I have since gotten two sets of Hogue Grips the rubber & Fancy Wood..
Gotta Love the Killer Dan Wesson Revolvers= Accuracy!!