Last weekend I bought what was labeled as a "bone in boston butt" smithfield brand from Walmart in Surf City NC. I choose that one because it was 9.8lbs, feeding 4 adults and a baby.
Got home opened it up to trim and rub, well low and behold, on the fat cap, is still the actual pig skin. A huge flap of skin, covering the whole cap, and extending off by a about 7 inches coming to kind of a triangle shaped flap of skin. I figure...oh well, Smithfield is owned by a chinese company and I got it from walmart...whatever, I trimmed off probably 2lbs worth of actual pig skin and absurd amount of fat.
Next morning I put it on the wsm around 6am. My cook ran a bit hot, averaging 255-260 most of the time, I had a strong ocean breeze to contend with. I wrapped at 165, Since I had people waiting for dinner at 7. I finally hit 203 degrees around 7pm. Let it rest only for about a hour because I had hungry people to feed. I pull the bone out, and its not a shoulder blade bone, but was an actual Ham bone.
The cook probably took about an hour or 2 longer then normal, especially since I was running hot the whole time. After google searching a bunch of different hog cuts and such, I determined that I cooked a bone in Ham, and not a shoulder. The ham being the back side of the pig with the boston butt being the front shoulder of the pig.
I dug the wrapper out of the trash and confirmed the sticker was boston butt. It was mis-labled as such, and should have been ham. Still came out very good, and none of my guests were any the wiser, but I came up short on meat. I probably only got 3 lbs of pulled pork out of the 9.8 lb cut due to the huge bone and pig skin that was included. I was on vacation and didnt feel like leaving the beach to go deal with the walmart people...but its the last time i buy from walmart or smithfield