Some people cut jug chokes TOO deep, trying to make their guns shoot like modern shotguns.
The jug choke I made in my little .44 smoothbore, approx. .005" deep & it was shooting great patterns.
I even won a trap shoot, shooting from the 16 yard line on a regular trap range - 10 for 10. Probably
couldn't do that today.

This was at rendezvous, back in the 80's (afaik)