Typical winning scores at a SxS match are usually around 80%, so if you can get to 40 you should be pretty close to the top at even championship events. I know Olympians who routinely shoot 90% with o/u race guns, but...
1. Mod/Full chokes are pretty tight for the fast short crossers and rabbits. Do you carry some 9s to open the pattern when you get a 20 yards shot. And, do you know the trick to shoot a little low on rabbits and let the debris kicked up supplement the pattern. Some of the guys in the club mix their own special spreader loads for the fast short crossers.
2. Competitive clays courses tend to combine shots where you need a lot gun of speed, and recoil is not your friend. If you are playing to win, you might want to speak to the guys at RST about some of their loads. Light recoil for fast recovery and top grade components.
3. As to shooting behind, join the club.
4. As to Teal, if they are straight up, it is just a parlor trick. You visualize where they stop, and just move your gun very slightly and pop them. If they are doubles take the lower one first then move up as the second higher target hits the top of its arc. If they are compound curving away, leads can tough to judge.
If you do start hitting 90%, come help us get our $50 back from the Fox Gang!
We was hussled.