Remove the partially cooked noodles from the water to a cooling rack set on top of a baking sheet lined with foil. Stuff each shell with a portion of the sausage mixture. Grab a couple of ounces of the sausage and roll it into a cylinder shape before sliding it inside the pasta shell.
Place the pan of shotgun shells on the smoker and close the lid. Smoke for about 1 1/2 hours, or until the internal temperature of the sausage reads 170-175 degrees F and the bacon has rendered. Remove the pan of shotgun shells from the smoker.