Well, in another thread the question was asked what is your favourite gun ?
So here is my thoughts.
Thirty years ago I shot Trap with a Miroku 3/4 & Full. Sporting was in its infancy and participants carried two guns , a tightly choked Trap gun and an open choked Skeet gun.
I persevered with my Trap gun and then won an MK38 choked Full & Extra Full, shot it and loved it.
AJ Smith was winning everything with a Trap gun tightly choked, two young men called Faulds and Digweed professed they were using tight chokes ( Richard was , George was bullsh*tting as usual )
Barry Hebditch thought I was far too tightly choked and recommended 1/4 & 1/2, so I got another gun choked 1/2 in both barrels, it was okay but I never shot it as well , so I bought a multichoke, disaster , spent more time fiddling rather than shooting.Bought Perazzi's , DT10's , them German mis-shapes made by Kellogs but eventually after much time and money wasted I went back to my original MK38 which I still shoot although very occasionally now at clays.
I am sure that 3/8 and 3/8 is sufficient for most targets, 1/2 & 1/2 is probably the best compromise , but if you use 3/4 plus you WILL have enough choke for everything and if you are careful and skilful enough the close stuff will not be a problem.
Remember most of us miss the easy stuff that wrecks a card , we all concentrate and try harder on the distant stuff of which there are relatively few targets on a course.
We hit a high percentage of a few targets and miss a high percentage of easy targets.
It is called learning