I load 2 1/2" for my Field SxS, using 75gr. 1F and 1 1/4oz. 7 1/2's for clay birds at rendezvous. No chokes, cylinder bores.
Missed one bird in 25.
The event was 20 shots, and went 5 more in a shoot-off for 1st. The other guy was shooting a Cooey single shot. The only stipulation was it had to have a hammer, or hammers.
I lost. Didn't get on the bird soon enough, my bad.