A good tightly chocked pass shooting double like a Fox HE with the lighter frame would work if it was stocked a little high. Also Smith or Win 21. Actually there are/were probably more American guns made like this than English/European.
West Side in Houston has a 100 ft. tower that throws this type of target and they are a real challenge to hit. They are sort of like high speed asprin tablets at 40-50 yds.
A HE 12 (actually an 11 gauge, or overbored 12 if you like- Super Fox on a lighter frame? Say what- I owned one once, some 20 years ago- 32" F&F, DT, Ej. weighed about as much as a loaded M-1 Garand- Now I use a 1929 era 12 Specialty grade Smith- 32" Imp. Mod & F, DT, Ej, std R size frame factory ventilated rib- std. field stock dims (for me) to a solid red pad- No trap shooting dims- for tower birds at our area hunt club- at 8 lbs. even, waaay easier to handle-
