To elaborate further, skeet choking goes against the grain. Shooters often employ as much, or more, constriction in their 28 than with their 12 (if they even use one!). This is because the endpoint is not pattern percentage (choke) but, rather, pattern density......at 21 yds.
As a corollary - because there are no free lunches - they must give up pattern diameter to maintain density. They choose to do this because they do not need a 30" circle to break 100 straight, and because they cannot abide a statistical glitch whereby a target gets through an overextended core.
You can have a "no-fly-through dense" 12 ga 1.125 oz pattern of around 30" - but you won't do it with 3/4 and 1/2 oz payloads.
Sam
Yeah Sam, that's what I was trying to say.
