That video warped my mind a little.
At the risk of showing my ignorance is a choke ID always absolute or does it flex and fit the barrel so to speak.
As in if you take a 0.010 choke and put in in a .740 barrel is the ID now 0.730 vs a .720 barrel where it's be .710
or is that 0.010 measure on a choke kind of absolute in that it might say 0.10 but it's always 0.710 and that "0.01" on the is the choke maker assuming you have a 0.73 bore gun?