I saw a similar process offered by Trebark...I think that was their name anyway, I called them some time back and they said they pretty much prep the gun, rough it up a bit, like sandblast it, but not so harsh, then clean and prep some more, and dip it in some kind of oil immerssion pattern, then when it cures, your good. They recommend cleaning your gun with a damp cloth and as long as you don't gouge your gun or anything, the finish lasts. I hunt almost always with doubles. I really can't remember ever getting a bird with that 3rd shot of my autos or pumps, so figured if I can't get it in two, then I could save the 3rd shot. For me, O/U's swing and point nicer, and fit better, like night and day, plus, as mentioned, you can swap chokes and loads for a greater range of conditions. I use trulock tubes, a skeet 2 in the top with a 4 shot for decoying birds and close shots and a 2 shot through an improved modified for the bottom barrel. If the birds don't decoy, simply fick the switch for the bottom barrel. My percentage greatly increased when I went to doubles and a box of shells lasts a heck of allot longer too. Hey choclab, you the same guy as the choclab over in duckhunting chat?