Hey guys,
Yeah, I do use the 21s for a couple of reasons.
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[*]I smoke 25lbs at a time, and I would not be able to fit all 25 lbs of my sticks in my smoker at the same time if I used smaller casings.
[*]I have a 15lb hand-crank stuffer that has trouble enough pushing meat through my 21mm stuffing tube. Pushing my meat mixture through a 19mm stuffing tube would be really hard to crank and would be hard on the stuffer gear system. I have heard that the 5lb stuffers handle the smaller tubes way better than the larger ones. Not sure why, but it seems to be a common recommendation
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I actually would kind of like to do some smaller sticks some time, but would either have to get a smaller stuffer or use my Jerky Cannon and then smoke in smaller batches.
Let me know if you have any questions. Feel free to PM as well.