It is hard o say but most of the major pro-ams will have MANY shooters over 400 on a 40 target course.Too many variables to say what a good score is but you will need to shoot up if you plan on placing.Up is anything over the 10 average per target.
Go to
www.asaarchery.com and check out the scores.
With the format of the asa,the yardage usally isn't as tough as an IBO event but the Rinehart targets are smaller and have really small 12 rings.