Hi Gibster,
That poor old Jamestown has lived a long hard life, but is still standing. Jabez was one of the best gunsmiths in the school.
He and his partner (William "Capt. Billy" Lamb) both occasionally used the cone in barrel on their early percussion rifles.
I have not seen a "Running Chicken" on one of his plain rifles, but there are a lot of things I have not seen, so that doesn't mean anything.
I am glad you rescued it. I hope to see you in Knoxville.
Michael