redray,
I own a browning(trap, back up gun) and had to have the triggers set to a release. I was missing the second pull on the trigger due to the long reset lenght that is required to set the second hammer. Also, I have found that the non-clay designed Browning guns have a tendency to swing like a fence post.
Just remember to keep your head glued to the stock and keep the gun moving.
Also, Here is something tha you can do when your not at the range. With the rifle unloaded!!!, find a room in your house that you can follow the ceiling lines when mounted up on the shotgun. The drill will get you used to moving with the rifle, and give you a better idea of your stance and foot placement in regards to target/swing.
And, as for shooting a perfect score, This is not trap or skeet, It's never going to happen!!!
All you have to do to win is to just break one more bird that the other people in your class/div. If anyone who tells you different, have them show you that they can break 20 running rabbits in a row. Hell, bet them for a case of ammo. This way, you will have somthing to laugh about when your shooting your free shell.