1.In A Food Processor, Combine The Beef, Pickle Relish And Onion; Cover And Process Until Coarsely Chopped. 2.In A Large Bowl, Combine The Ketchup, Mayonnaise, Pickle Juice, Seasoned Salt And Pepper. Stir In The Beef Mixture. Cover And Refrigerate For At Least 1 Hour. Spread On Nine Slices Of Bread; Top With Remaining Bread.