Rules for new Shotgun Patterning Area

We have built a Shotgun Patterning area directly across from the pavilion. The left side has a metal plate which will be coated with grease for patterning Trap, Skeet & Bird guns at 21 yards. Shot size is limited to 7 1/2 shot maximum. The right side has pads located at 5 yard intervals out to 50 yards for patterning Turkey and Waterfowl loads. Do not shoot the metal plate with any load larger than 7 1/2!