Obviously, you can't shoot with a regular 5 man squad. You shoot along side them, until you shoot your 10 or 25 targets. You are usually not part of a squad, and don't win money competing with them, either. You pay for the targets you shoot, and annoy those fussbudgets who complain about your smoke and the smell as an excuse for missing a target! The other shooters like the idea of you using a BP shotgun, like to see you break the targets, like the smoke cloud, like the flame out the barrel, and even grow to like the smell. Most of all they like the fact that you have the courage to take a BP shotgun out to a trapshoot and shoot from the same distance they are shooting, with a cylinder bore gun.
Of course, you can always do what Roundball does, and find a time when the trap range is all yours, and shoot as many clays as you want, at the speed you want to shoot them.
I can shoot about 6 rounds of BP loads using a DB shotgun in the time it takes the others to shoot their 10, if I keep my mind on loading, and they let me shoot my first two barrels at the beginning of the match. I can finish the remaining two stations in a 10-bird match, while the next squad is coming up to take their places on the line.