After seeing all of the pictures of roast beef I had to give it a try. My first attempt........... 3 Lbs. sirloin, seasoned with Montreal steak seasoning, garlic powder and onion powder. Two hours at 230F, internal temp at 140, used hickory chips for smoke. I was expecting this to take 4 to 6 hours based on other posts. I double checked the temp with two different thermometers and it was a solid 140. I was hoping the outside would have been a little darker. Then it snowed, again.