Yep. This is from 2008

EQUIPMENT
1. Shooters must use a shotgun of the make related to the Association they are representing (ie. L.C. Smith/Hunter Arms/Marlin for LCSCA or Parker for PGCA).
2. Participants may use any hammer or hammerless model and grade Smith or Parker gun produced by the original companies. Reproductions or modern/imported guns marketed under these famous names are not allowed for this event.
3. Any original gauge my be used
4. Modified and restored guns are allowed, including stock replacement/alteration, recoil pads shortened or lined barrels, screw-in chokes, etc. Relined barrels must be in the gauge originally manufactured.
5. Chamber inserts/reducers (Chamber-Mates, etc.) and full-length barrel inserts/reducers are acceptable only for use in twist or Damascus barreled vintage guns.
6. Shooters using guns equipped with screw-in chokes may not change choke tubes once they begin competition in each round.
7. Eye and ear protection are required of all competitors.