The 28" barrels for my 28 repro were choked .034/.043. Had them opened to ..008/.018. Not worried about resale value. I had a 16/20 combo with Krieghoff barrels. The gun was really nice with the 28" 16 barrels but did not balance well with the 26" 20 ga barrels. It was a single-trigger gun and I never had a problem with it.

Given the price the 16/20' are selling for you can probably find an original 16 ga DH for close to the same price except if you are looming for a gun with a straight stock.

Around the steel no tortured worm shall twine.