From the 2009 Rulebook, page 39, available from shootata.com at the link above
"SECTION XI
GRAND AND ALL AMERICAN QUALIFICATION
A. GRAND AMERICAN QUALIFICATION
No participant shall be classified to shoot Handicap events at less than
25.0 yards unless he/she has a minimum of 1000 registered Handicap
targets in the current year. The1000 handicap targets must have been
registered beginning the first day after the last day of previous Grand
American World Trapshooting Championships through the last day of
preliminary week of the current Grand American World Trapshooting
Championships. However, participants who fail to meet Grand American
Handicap qualification as described above shall have the choice of
shooting targets only from their assigned yardage provided they waive
and forfeit all rights to trophies, options, purses, and added money.
Handicap target requirements are waived for Senior Veterans, making
them eligible for trophies and monies.
Shooters who do not have a total of 1000 16 yard targets registered
beginning the first day after the last day of previous Grand American
World Trapshooting Championships through the last day of
preliminary week of the current Grand American World Trapshooting
Championships will be advanced (1) class or more at the discretion
of the Handicap Committee. Shooters with less than 300 registered
single targets will be placed in class B or higher at the discretion on
the Handicap Committee.
Shooters who do not have a total of 1000 doubles targets registered
beginning the first day after the last day of previous Grand American
World Trapshooting Championships through the last day of
preliminary week of the current Grand American World Trapshooting
Championships will be advanced (1) class or more at the discretion
of the Handicap Committee. Shooters with less than 300 registered
doubles targets will be placed in class B or higher at the discretion on
the Handicap Committee."
Neil