I hear praise for the original jellyhead choke. Why is the former sought after? Difference between the old and new?
The major difference is in the "internal geometry" of the choke tube. It is still a conical/parallel design but hey lengthened both the taper and the parallel sections. The ports are a bit longer and thinner and they eliminated the knurling at the muzzle. They coated it with a very tough material to prevent rust. All in all it's a more finely made choke than the original
I suspect that the "Black T" coating requires more break-in time than the original blued choke and that may account for folks not having the results they expected.
I hope that helps some.
Thanks,
Clark