I've made some caseless sticks with my Cabela's Jerky Blaster, but now I want to give cased ones a try. So I will be buying a long nozzle for the Blaster, and some collegen casings. My question is, what is the normal size you guys make? From reading the threads here, it seems to really vary. I want something akin to the store-bought size. It's also tough converting fractions to millimeters, thanks very much manufacturers. I'm thinking, do I use a 3/8" nozzle and 21 mm casings?