The Journey of a Kidney Stone. To really understand how long it takes a kidney stone to pass, you should understand exactly where it goes throughout the body. Kidney stones start in the â you guessed it â kidneys. They have to pass through the long ureter tubes and eventually make their way into the bladder.
Pork shoulder cook time can be figured at approximately 1.5 hours per pound so a 8 pound shoulder will require about 12 hours in the smoker.
If you smoke on the higher end of the temperature range subtract about 10 minutes per pound. This means a ten-pound pork shoulder can take 15 hours to finish.