RE: choke for trap shooting?
it depends on your skill level really! if it takes you longer to get on the bird and pull t he trigger regardless of speed you will want a mod. or a full depending on how long it takes you to get on the bird. speed, and all that is important but just focus on hitting the birds! experiment on what works best for you! (i dont supose you are shooting handycap, if you are regardless, FULL) good luck!
wait how many did you hit out of those 70 you shot last time?