Mike, I have never cut a jug choke or patterned one. Don't even own one. However, I have some fairly strong ideas of how choke works. I'll opine that a jug choke will work just like a normal choke if the constrictions are the same. I'd expect that failure of a 2" jug comes from failing to get sufficient constriction. It takes a thick wall to give up 0.030" diameter near the muzzle.
On the breach end of the jug, what sort of transition do you cut from bore diameter to jug diameter? Short taper, long taper, more or less a step?
DDA
