As for slugging the bores and micing the slugs, I won't be doing that. I don't need to know an exact choke constriction. Choke is irrelevant. Just put the muzzle at the right place and you break the clay or kill the bird.
You know the thought process behind it my friend.
I was just curious as to how the chokes break down compared to the 12g as the OP was asking about.
Tight chokes leave diesel smoke. Open chokes leave big pieces. I say "Smoke 'em if you got 'em!!"